Upgrading php7.4.33 to 8.1 Topic is solved

[pterosaur2]

I have upgraded my website from Joomla 3.10 to 4.2.5 and have investigated upgrading php to 8.1. I have successfully rendered the frontend at php 8.1 but the Administrator Home Dashboard displays errors. I have debugging working but cannot see the solution.
I have inserted FPA and attach a copy of the results.
Any help will be most gratefully received.

[toivo]

Please follow the FPA instructions and copy and paste the results as BBCode into your reply!

[pterosaur2]

Apologies, I didn't read all the instructions.

Joomla! Instance :: Joomla! 4.2.5-Stable (Uaminifu) 8-November-2022
Joomla! Configured :: Yes | Read-Only (444) |
Configuration Options :: Offline: false | SEF: true | SEF Suffix: false | SEF ReWrite: true | .htaccess/web.config: Yes | GZip: true | Cache: true | CacheTime: 15 | CacheHandler: file | CachePlatformPrefix: false | FTP Layer: true | Proxy: false | LiveSite: | Session lifetime: 15 | Session handler: database | Shared sessions: false | SSL: 0 | Error Reporting: default | Site Debug: true | Language Debug: false | Default Access: Public | Unicode Slugs: false | dbConnection Type: mysqli | PHP Supports J! 4.2.5: Yes | Database Supports J! 4.2.5: Yes | Database Credentials Present: Yes |

Host Configuration :: OS: Linux | OS Version: 3.10.0-962.3.2.lve1.5.70.el7.x86_64 | Technology: x86_64 | Web Server: Apache | Encoding: gzip, deflate, br | System TMP Writable: Yes | Free Disk Space : 1527.35 GiB |

PHP Configuration :: Version: 7.4.33 | PHP API: litespeed | Session Path Writable: Yes | Display Errors: 0 | Error Reporting: 32759 | Log Errors To: error_log | Last Known Error: 19th November 2022 06:39:11. | Register Globals: | Magic Quotes: | Safe Mode: | Allow url fopen: 1 | Open Base: | Uploads: 1 | Max. Upload Size: 512M | Max. POST Size: 512M | Max. Input Time: 300 | Max. Execution Time: 300 | Memory Limit: 512M

Database Configuration :: Version: 5.7.40 (Client:5.7.40) | Database Size: 30.50 MiB | #of Tables with config prefix:  237 | #of other Tables:  0 | User Privileges : GRANT ALL

PHP Extensions :: Core (7.4.33) | date (7.4.33) | libxml (7.4.33) | openssl (7.4.33) | pcre (7.4.33) | sqlite3 (7.4.33) | zlib (7.4.33) | bz2 (7.4.33) | calendar (7.4.33) | ctype (7.4.33) | curl (7.4.33) | hash (7.4.33) | filter (7.4.33) | ftp (7.4.33) | gettext (7.4.33) | gmp (7.4.33) | SPL (7.4.33) | iconv (7.4.33) | pcntl (7.4.33) | readline (7.4.33) | Reflection (7.4.33) | session (7.4.33) | standard (7.4.33) | shmop (7.4.33) | SimpleXML (7.4.33) | mbstring (7.4.33) | tokenizer (7.4.33) | xml (7.4.33) | litespeed () | i360 (7.0.4) | bcmath (7.4.33) | dba (7.4.33) | dom (20031129) | enchant (7.4.33) | fileinfo (7.4.33) | gd (7.4.33) | imap (7.4.33) | intl (7.4.33) | json (7.4.33) | ldap (7.4.33) | exif (7.4.33) | mysqli (7.4.33) | mysqlnd (mysqlnd 7.4.33) | PDO (7.4.33) | pdo_mysql (7.4.33) | pdo_pgsql (7.4.33) | pdo_sqlite (7.4.33) | pgsql (7.4.33) | Phar (7.4.33) | posix (7.4.33) | pspell (7.4.33) | snmp (7.4.33) | soap (7.4.33) | sockets (7.4.33) | sysvmsg (7.4.33) | sysvsem (7.4.33) | sysvshm (7.4.33) | xmlreader (7.4.33) | xmlrpc (7.4.33) | xmlwriter (7.4.33) | xsl (7.4.33) | zip (1.15.6) | Zend Engine (3.4.0) |
Potential Missing Extensions ::

Switch User Environment :: PHP CGI: No | Server SU: No | PHP SU: No | Potential Ownership Issues: No

Core Folders :: images/ (755) | components/ (755) | modules/ (755) | plugins/ (755) | language/ (755) | templates/ (755) | cache/ (755) | logs/ (755) | tmp/ (755) | administrator/components/ (755) | administrator/modules/ (755) | administrator/language/ (755) | administrator/templates/ (755) | administrator/logs/ (---) |

Elevated Permissions (First 10) ::

Database statistics :: Uptime: 3340238 | Threads: 2 | Questions: 243538354 | Slow queries: 0 | Opens: 9917793 | Flush tables: 118 | Open tables: 2000 | Queries per second avg: 72.910 |

Components :: Site ::
Core ::
3rd Party:: WF_LINKS_JOOMLALINKS_TITLE (2.9.32) ? | WF_AGGREGATOR_[youtube]_TITLE (2.9.32) ? | WF_AGGREGATOR_VINE_TITLE (2.6.20) ? | WF_AGGREGATOR_VIMEO_TITLE (2.9.32) ? | WF_AGGREGATOR_DAILYMOTION_TITLE (2.9.32) ? | WF_AGGREGATOR_VIDEO_TITLE (2.9.32) ? | WF_AGGREGATOR_AUDIO_TITLE (2.9.32) ? | WF_FILESYSTEM_JOOMLA_TITLE (2.9.32) ? | WF_POPUPS_JCEMEDIABOX_TITLE (2.9.32) ? | WF_POPUPS_WINDOW_TITLE (2.6.20) ? | WF_LINK_SEARCH_TITLE (2.9.32) ? | WF_WORDCOUNT_TITLE (2.9.32) ? | WF_ATTRIBUTES_TITLE (2.9.32) ? | WF_HR_TITLE (2.9.32) ? | WF_PREVIEW_TITLE (2.9.32) ? | WF_FULLSCREEN_TITLE (2.9.32) ? | WF_SEARCHREPLACE_TITLE (2.9.32) ? | WF_FONTSELECT_TITLE (2.9.32) ? | JCE - Noneditable (1.0.0) ? | WF_LAYER_TITLE (2.6.20) ? | WF_NONBREAKING_TITLE (2.9.32) ? | WF_CLEANUP_TITLE (2.9.32) ? | WF_MEDIA_TITLE (2.9.32) ? | WF_FORMATSELECT_TITLE (2.9.32) ? | WF_KITCHENSINK_TITLE (2.9.32) ? | WF_ANCHOR_TITLE (2.9.32) ? | WF_STYLE_TITLE (2.9.32) ? | WF_SOURCE_TITLE (2.9.32) ? | WF_LISTS_TITLE (2.9.32) ? | WF_DIRECTIONALITY_TITLE (2.9.32) ? | WF_AUTOSAVE_TITLE (2.9.32) ? | WF_TEXTCASE_TITLE (2.9.32) ? | WF_LANGCODE_TITLE (2.9.32) ? | WF_CLIPBOARD_TITLE (2.9.32) ? | WF_HELP_TITLE (2.9.32) ? | WF_IMGMANAGER_TITLE (2.9.32) ? | WF_ARTICLE_TITLE (2.9.32) ? | WF_SPELLCHECKER_TITLE (2.9.32) ? | WF_PRINT_TITLE (2.9.32) ? | WF_BROWSER_TITLE (2.9.32) ? | WF_STYLESELECT_TITLE (2.9.32) ? | WF_FONTSIZESELECT_TITLE (2.9.32) ? | WF_CHARMAP_TITLE (2.9.32) ? | WF_FONTCOLOR_TITLE (2.9.32) ? | WF_VISUALCHARS_TITLE (2.9.32) ? | WF_TABLE_TITLE (2.9.32) ? | WF_CONTEXTMENU_TITLE (2.9.32) ? | WF_REFERENCE_TITLE (2.9.32) ? | WF_LINK_TITLE (2.9.32) ? | WF_INLINEPOPUPS_TITLE (2.6.20) ? | WF_VISUALBLOCKS_TITLE (2.9.32) ? | WF_XHTMLXTRAS_TITLE (2.6.20) ? | WF_EMOTIONS_TITLE (2.9.32) ? |

Components :: Admin ::
Core :: com_modules (4.0.0) 1 | com_newsfeeds (4.0.0) 1 | com_fields (4.0.0) 1 | com_plugins (4.0.0) 1 | com_admin (4.0.0) 1 | com_languages (4.0.0) 1 | com_config (4.0.0) 1 | com_contenthistory (4.0.0) 1 | com_tags (4.0.0) 1 | com_login (4.0.0) 1 | com_wrapper (4.0.0) 1 | com_media (3.0.0) 1 | com_weblinks (4.0.1) 1 | com_ajax (4.0.0) 1 | com_joomlaupdate (4.0.3) 1 | com_postinstall (4.0.0) 1 | com_actionlogs (3.9.0) 1 | com_users (4.0.0) 1 | com_finder (4.0.0) 1 | com_templates (4.0.0) 1 | com_mails (4.0.0) 1 | com_categories (4.0.0) 1 | com_scheduler (4.1.0) 1 | com_content (4.0.0) 1 | com_cache (4.0.0) 1 | com_workflow (4.0.0) 1 | com_installer (4.0.0) 1 | com_menus (4.0.0) 1 | com_banners (4.0.0) 1 | com_cpanel (4.0.0) 1 | com_checkin (4.0.0) 1 | com_messages (4.0.0) 1 | com_associations (4.0.0) 1 | com_privacy (3.9.0) 1 | com_search (4.0.0-dev) 1 | com_redirect (4.0.0) 1 |
3rd Party:: Free Mono (-) ? | Helvetica (-) ? | com_phocapdf (4.0.0) 1 | com_admintools (7.1.11) 1 | com_akeebabackup (9.4.3) 1 | com_djimageslider (4.4) 1 | Securitycheck (3.5.1) 1 | Cookies CK (3.3.3) 1 | com_cookiesck (3.3.3) 1 | COM_OSMAP (5.0.8) 1 | com_phocadownload (4.0.4) 1 | COM_JCE (2.9.32) 1 | com_dpcalendar (8.7.0) 1 | com_phocagallery (4.5.2) 1 |

Modules :: Site ::
Core :: mod_users_latest (3.0.0) 1 | mod_random_image (3.0.0) 1 | mod_related_items (3.0.0) 1 | mod_articles_latest (3.0.0) 1 | mod_custom (3.0.0) 1 | mod_articles_categories (3.0.0) 1 | mod_tags_popular (3.1.0) 1 | mod_weblinks (4.0.1) 1 | mod_search (4.0.0-dev) 1 | mod_languages (3.5.0) 1 | mod_tags_similar (3.1.0) 1 | mod_login (3.0.0) 1 | mod_whosonline (3.0.0) 1 | mod_feed (3.0.0) 1 | mod_syndicate (3.0.0) 1 | mod_menu (3.0.0) 1 | mod_articles_category (3.0.0) 1 | mod_articles_archive (3.0.0) 1 | mod_finder (3.0.0) 1 | mod_stats (3.0.0) 1 | mod_footer (3.0.0) 1 | mod_articles_news (3.0.0) 1 | mod_wrapper (3.0.0) 1 | mod_banners (3.0.0) 1 | mod_articles_popular (3.0.0) 1 | mod_breadcrumbs (3.0.0) 1 |
3rd Party:: mod_dpcalendar_upcoming (8.3.2) 1 | OS Responsive Image Gallery (1.0.2) 1 | mod_dpcalendar_mini (8.3.2) 1 | JJ Social Slider (3.0.0) 1 | sigplus (1.5.0.294) 1 | DJ-ImageSlider (4.4) 1 | RokAjaxSearch (2.0.6) 1 | mod_dpcalendar_counter (8.3.2) 1 | Simple RSS Feed Reader (by JoomlaWo (3.9.0) ? | Donations Thermometer (1.6.9) 1 |

Modules :: Admin ::
Core :: mod_submenu (3.0.0) 1 | mod_privacy_dashboard (3.9.0) 1 | mod_logged (3.0.0) 1 | mod_stats_admin (3.0.0) 1 | mod_user (4.0.0) 1 | mod_multilangstatus (3.0.0) 1 | mod_custom (3.0.0) 1 | mod_version (3.0.0) 1 | mod_sampledata (3.8.0) 1 | mod_post_installation_messages (4.0.0) 1 | mod_loginsupport (4.0.0) 1 | mod_popular (3.0.0) 1 | mod_title (3.0.0) 1 | mod_login (3.0.0) 1 | mod_feed (3.0.0) 1 | mod_menu (3.0.0) 1 | mod_latestactions (3.9.0) 1 | mod_latest (3.0.0) 1 | mod_quickicon (3.0.0) 1 | mod_toolbar (3.0.0) 1 | mod_privacy_status (4.0.0) 1 | mod_messages (4.0.0) 1 | mod_frontend (4.0.0) 1 |
3rd Party:: Google Analytics Dashboard (2.7.5) 1 |

Libraries ::
Core ::
3rd Party:: file_fof30 (3.6.2) ? | Regular Labs Library (22.9.4783) 1 | {{extension.element.lower}} (1.0.0) ? | {{extension.element.lower}} (1.0.0) ? | {{extension.element.lower}} (1.0) ? | {{extension.element.lower}} (1.0) ? | windwalker (4.1.21) 1 | file_fof40 (4.1.0) ? |

Plugins ::
Core :: plg_multifactorauth_fixed (4.2.0) 0 | plg_multifactorauth_totp (3.2.0) 0 | plg_multifactorauth_webauthn (4.2.0) 0 | plg_multifactorauth_yubikey (3.2.0) 0 | plg_multifactorauth_email (4.2.0) 0 | plg_user_joomla (3.0.0) 1 | plg_user_terms (3.9.0) 0 | plg_user_contactcreator (3.0.0) 0 | plg_user_profile (3.0.0) 0 | plg_user_token (3.9.0) 1 | plg_filesystem_local (4.0.0) 1 | plg_sampledata_multilang (4.0.0) 1 | plg_task_demo_tasks (4.1) 1 | plg_task_site_status (4.1) 1 | plg_task_requests (4.1) 1 | plg_task_check_files (4.1) 1 | plg_api-authentication_basic (4.0.0) 0 | plg_api-authentication_token (4.0.0) 1 | plg_editors-xtd_image (3.0.0) 1 | plg_editors-xtd_article (3.0.0) 1 | plg_editors-xtd_pagebreak (3.0.0) 1 | plg_editors-xtd_menu (3.7.0) 1 | plg_editors-xtd_readmore (3.0.0) 1 | plg_editors-xtd_weblink (4.0.1) 0 | plg_editors-xtd_fields (3.7.0) 1 | plg_editors-xtd_module (3.5.0) 1 | plg_extension_joomla (3.0.0) 1 | plg_extension_finder (4.0.0) 1 | plg_extension_namespacemap (4.0.0) 1 | plg_system_task_notification (4.1) 1 | plg_system_privacyconsent (3.9.0) 0 | plg_system_sef (3.0.0) 1 | plg_system_log (3.0.0) 1 | plg_system_weblinks (4.0.1) 0 | plg_system_remember (3.0.0) 1 | plg_system_redirect (3.0.0) 1 | plg_system_accessibility (4.0.0) 1 | plg_system_languagefilter (3.0.0) 0 | plg_system_stats (3.5.0) 1 | plg_system_updatenotification (3.5.0) 0 | plg_system_logout (3.0.0) 1 | plg_system_cache (3.0.0) 0 | plg_system_skipto (4.0.0) 1 | plg_system_languagecode (3.0.0) 0 | plg_system_debug (3.0.0) 1 | plg_system_shortcut (4.2.0) 1 | plg_system_schedulerunner (4.1) 1 | plg_system_fields (3.7.0) 1 | plg_system_highlight (3.0.0) 1 | plg_system_webauthn (4.0.0) 1 | plg_system_httpheaders (4.0.0) 0 | plg_system_actionlogs (3.9.0) 0 | plg_system_jooa11y (4.2.0) 1 | plg_system_logrotation (3.9.0) 1 | plg_system_sessiongc (3.8.6) 1 | plg_workflow_featuring (4.0.0) 1 | plg_workflow_publishing (4.0.0) 1 | plg_workflow_notification (4.0.0) 1 | plg_media-action_resize (4.0.0) 1 | plg_media-action_rotate (4.0.0) 1 | plg_media-action_crop (4.0.0) 1 | plg_behaviour_versionable (4.0.0) 1 | plg_behaviour_taggable (4.0.0) 1 | plg_search_contacts (4.0.0-dev) 1 | plg_search_categories (4.0.0-dev) 1 | plg_search_weblinks (4.0.1) 0 | plg_search_newsfeeds (4.0.0-dev) 1 | plg_search_content (4.0.0-dev) 1 | plg_search_tags (4.0.0-dev) 1 | plg_finder_contacts (3.0.0) 1 | plg_finder_categories (3.0.0) 1 | plg_finder_weblinks (4.0.1) 0 | plg_finder_newsfeeds (3.0.0) 1 | plg_finder_content (3.0.0) 1 | plg_finder_tags (3.0.0) 1 | plg_captcha_recaptcha (3.4.0) 1 | plg_captcha_recaptcha_invisible (3.8) 1 | plg_fields_url (3.7.0) 1 | plg_fields_checkboxes (3.7.0) 1 | plg_fields_color (3.7.0) 1 | plg_fields_text (3.7.0) 1 | plg_fields_user (3.7.0) 1 | plg_fields_usergrouplist (3.7.0) 1 | plg_fields_list (3.7.0) 1 | plg_fields_media (3.7.0) 1 | plg_fields_calendar (3.7.0) 1 | plg_fields_radio (3.7.0) 1 | plg_fields_imagelist (3.7.0) 1 | plg_fields_editor (3.7.0) 1 | plg_fields_subform (4.0.0) 1 | plg_fields_textarea (3.7.0) 1 | plg_fields_sql (3.7.0) 1 | plg_fields_integer (3.7.0) 1 | plg_installer_folderinstaller (3.6.0) 1 | plg_installer_webinstaller (4.0.0) 1 | plg_installer_packageinstaller (3.6.0) 1 | plg_installer_urlinstaller (3.6.0) 1 | plg_installer_override (4.0.0) 1 | plg_authentication_cookie (3.0.0) 1 | plg_authentication_joomla (3.0.0) 1 | plg_authentication_ldap (3.0.0) 0 | plg_webservices_modules (4.0.0) 1 | plg_webservices_menus (4.0.0) 1 | plg_webservices_media (4.1.0) 1 | plg_webservices_plugins (4.0.0) 1 | plg_webservices_redirect (4.0.0) 1 | plg_webservices_users (4.0.0) 1 | plg_webservices_templates (4.0.0) 1 | plg_webservices_config (4.0.0) 1 | plg_webservices_installer (4.0.0) 1 | plg_webservices_languages (4.0.0) 1 | plg_webservices_messages (4.0.0) 1 | plg_webservices_banners (4.0.0) 1 | plg_webservices_newsfeeds (4.0.0) 1 | plg_webservices_privacy (4.0.0) 1 | plg_webservices_content (4.0.0) 1 | plg_webservices_tags (4.0.0) 1 | plg_privacy_user (3.9.0) 1 | plg_privacy_consents (3.9.0) 1 | plg_privacy_message (3.9.0) 1 | plg_privacy_actionlogs (3.9.0) 1 | plg_privacy_content (3.9.0) 1 | plg_content_loadmodule (3.0.0) 1 | plg_content_vote (3.0.0) 1 | plg_content_joomla (3.0.0) 1 | plg_content_pagebreak (3.0.0) 1 | plg_content_pagenavigation (3.0.0) 1 | plg_content_finder (3.0.0) 0 | plg_content_fields (3.7.0) 1 | plg_content_confirmconsent (3.9.0) 0 | plg_content_emailcloak (3.0.0) 1 | plg_actionlog_joomla (3.9.0) 1 | plg_quickicon_joomlaupdate (3.0.0) 1 | plg_quickicon_privacycheck (3.9.0) 1 | plg_quickicon_extensionupdate (3.0.0) 1 | plg_quickicon_overridecheck (4.0.0) 1 | plg_quickicon_phpversioncheck (3.7.0) 1 | plg_quickicon_downloadkey (4.0.0) 1 |
3rd Party:: plg_user_dpcalendar (8.7.0) 1 | plg_sampledata_dpcalendar (8.3.2) 1 | PLG_EDITORS-XTD_BETTERPREVIEW (6.7.1) 0 | plg_editors-xtd_sigplus (1.5.0.294) 0 | plg_extension_jce (2.9.32) 1 | PLG_OSMAP_JOOMLA (5.0.8) 1 | PLG_SYSTEM_REGULARLABS (22.9.4783) 0 | plg_system_jce (2.9.32) 1 | PLG_SYSTEM_BETTERPREVIEW (6.7.1) 0 | plg_system_phocapdf (3.0.12) 0 | plg_system_ospamanot (2.0.4) 1 | Cookies CK (3.3.3) 1 | System - Helix Ultimate Framework (2.0.11) 1 | PLG_SYSTEM_ADMINTOOLS (7.1.11) 1 | plg_system_osmylicensesmanager (2.0.15) 1 | System - Securitycheck (3.5.1) 0 | plg_phocapdf_content (3.0.12) 1 | plg_search_sigplus (1.5.0.294) 0 | plg_search_dpcalendar (8.3.2) 1 | Smart Search - mp3 Browser Fork (0.4.1) 0 | plg_fields_mediajce (2.9.32) 1 | plg_fields_dpcalendar (8.7.0) 1 | plg_installer_jce (2.9.32) 1 | plg_installer_dpcalendar (8.7.0) 1 | plg_editors_jce (2.9.32) 1 | plg_editors_codemirror (5.65.6) 1 | plg_editors_tinymce (5.10.5) 1 | plg_privacy_dpcalendar (8.7.0) 1 | plg_content_jce (2.9.32) 1 | AllVideos (by JoomlaWorks) (6.1.0) 1 | AllVideos (by JoomlaWorks) (6.1.0) 1 | PLG_EMBED_GOOGLE_MAP (2.3.1) 1 | plg_content_sigplus (1.5.0.294) 1 | plg_content_dpcalendar (8.7.0) 1 | PLG_MP3BROWSER_SYS_NAME (0.4.1) 0 | Simple Audio Player - Shortcode (1.5) 1 | PLG_ACTIONLOG_ADMINTOOLS (7.1.11) 0 | plg_actionlog_dpcalendar (8.7.0) 1 | PLG_QUICKICON_AKEEBABACKUP (9.4.3) 0 | plg_quickicon_jce (2.9.32) 0 |

Templates :: Site :: cassiopeia (1.0) 1 | lt_corporation (4.0) 1 | lt_personal (4.0) 1 |
Templates :: Admin :: atum (1.0) 1 |

Regards,
Pterosaur

[toivo]

Does the PHP error log have PHP fatal errors when the 500 error occurs?

Please go to the Global Configuration and set Error Reporting to 'Maximum' and enable the Debug option. Those selections will display the error messages. Copy and paste them into your reply.

[pterosaur2]

Hello toivo,

The Fatal Error is: Compile Error: Array and string offset access syntax with curly braces is no longer supported


     */
    public static function getStrLen( $str ) {
        $strlenVar = strlen( $str );
        $d = $ret = 0;
        for ( $count = 0; $count < $strlenVar; ++$count ) {
            $ordinalValue = ord( $str{$ret} );
            switch ( true ) {
                case ( ( $ordinalValue >= 0x20 ) && ( $ordinalValue <= 0x7F ) ) :
                    // characters U-00000000 - U-0000007F (same as ASCII)
                    $ret++;
                    break;

The error log when the fault is on contains:

[03-Jan-2019 22:06:25 UTC] PHP Warning: include(app/Mage.php): failed to open stream: No such file or directory in Command line code on line 1
[03-Jan-2019 22:06:25 UTC] PHP Warning: include(app/Mage.php): failed to open stream: No such file or directory in Command line code on line 1
[03-Jan-2019 22:06:25 UTC] PHP Warning: include(): Failed opening 'app/Mage.php' for inclusion (include_path='.:/opt/cpanel/ea-php56/root/usr/share/pear') in Command line code on line 1
[03-Jan-2019 22:06:25 UTC] PHP Fatal error: Class 'Mage' not found in Command line code on line 1

Thank you for your help,
Pterosaur2

[toivo]

Compile Error: Array and string offset access syntax with curly braces is no longer supported

This error does not come from the core of Joomla 4. Some incompatible third party extension may use obsolete syntax, though. The Debug option should have shown the name and location of the script where this error occurred.

Where did this piece of PHP code come from?

The entries from the error log show attempts to access the file app/Mage.php that does not belong to Joomla. Had the website been hacked in 2019?

[pterosaur2]

Hello toivo,

In response to your question:
Does the PHP error log have PHP fatal errors when the 500 error occurs?

The error message with php 8.1 enabled is from the Administrators home dashboard and the code below it is debug information.

I am not aware of any hacking of the site or what App Mage.php might be.

Thank you for all your help.

[toivo]

I am not aware of any hacking of the site or what App Mage.php might be.

The hacking attempt would have gone unnoticed in 2019 but the request to access the file /app/Mage.php may have originated inside PHP code that was run by the website at that time.

The error message with php 8.1 enabled is from the Administrators home dashboard and the code below it is debug information.

Usually debug information gives the location, the path of the script where the error occurs. In this case the following line uses curly brackets, deprecated in PHP 7.4 and no longer supported in PHP 8:

Code: Select all

            $ordinalValue = ord( $str{$ret} );

Make sure that the plugin System - Debug is enabled and access the Dashboard again. Hopefully the location of the obsolete plugin will be displayed.

Ref. PHP RFC: Deprecate curly brace syntax for accessing array elements and string offsets

[pterosaur2]

I've checked that the plugin is enabled and checked the error message now displayed on the home dashboard which is:
Fatal error: Array and string offset access syntax with curly braces is no longer supported in /home/allsa694/public_html/administrator/modules/mod_ga_dash/src/Google/Utils.php on line 57

with the Exception:
Symfony\Component\ErrorHandler\Error\ FatalError
in /home/allsa694/public_html/administrator/modules/mod_ga_dash/src/Google/Utils.php (line 57)

     */
    public static function getStrLen( $str ) {
        $strlenVar = strlen( $str );
        $d = $ret = 0;
        for ( $count = 0; $count < $strlenVar; ++$count ) {
            $ordinalValue = ord( $str{$ret} );
            switch ( true ) {
                case ( ( $ordinalValue >= 0x20 ) && ( $ordinalValue <= 0x7F ) ) :
                    // characters U-00000000 - U-0000007F (same as ASCII)
                    $ret++;
                    break;

Does that help?

Many thanks.

[toivo]

The culprit is the Google Analytics Dashboard, a third party extension. Where was this module downloaded from? It is strange that this administrator module is not found from the Joomla Extensions Directory (JED).

Modify the line shown above and change the curly braces to square brackets and check if the module still works:

Code: Select all

            $ordinalValue = ord( $str[$ret] );

[pterosaur2]

The Google Analytics Dashboard was, I think, from here: https://extensions.joomla.org/extension ... dashboard/

I've modified the line : for ( $count = 0; $count < $strlenVar; ++$count ) [
$ordinalValue = ord( $str{$ret} );

The Home Dashboard does now render but not quite correctlt and includes an error: 0 syntax error, unexpected token ";", expecting "]"

Its good to see progress, thank you.

[pterosaur2]

Thank you toivo,

I looked again at what I had changed and amended it to change just the curly brackets in line 57, that solved the problem!!

Thank you for all your help.

[toivo]

The Google Analytics Dashboard was, I think, from here: https://extensions.joomla.org/extension ... dashboard/

That extensions is a system plugin 'advga' and it does not have any modules. Your issue comes from an administrator module called 'mod_ga_dash'.