Could Not Instantiate Mail Function

[Windwood]

https://docs.joomla.org/How_to_debug_SM ... n_Joomla_4
went through the above information to try and correct issue and no joy.
Here is the code from "everything.php"
any help appreciated.

Here's the website in question:
https://www.ohiovalleycameraclub.com/contact

#
#<?php die('Forbidden.'); ?>
#Date: 2024-05-25 17:42:52 UTC
#Software: Joomla! 5.1.0 Stable [ Kudumisha ] 16-April-2024 16:00 GMT

#Fields: datetime priority clientip category message
2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: Sending with mail()
2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: Sendmail path: /usr/sbin/sendmail -t -i
2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: Envelope sender:
2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: To: OVCC <[email protected]>
2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: Subject: Test mail from OVCC
2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: Headers: Date: Sat, 25 May 2024 17:42:52 +0000
From: OVCC <[email protected]>
Message-ID: <TwGIJZDSePTwlOrtS7iqslqJlGFFvJNPlm5Ubyw4oc@www.ohiovalleycameraclub.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8


2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: Result: false
2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: Could not instantiate mail function.
2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: Sending with mail()
2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: Sendmail path: /usr/sbin/sendmail -t -i
2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: Envelope sender:
2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: To: OVCC <[email protected]>
2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: Subject: Test mail from OVCC
2024-05-25T17:42:52+00:00 ERROR 216.196.140.150 mail Error in Mail API: Headers: Date: Sat, 25 May 2024 17:42:52 +0000
From: OVCC <[email protected]>
Message-ID: <VujG38gGBpYQFYL795UhSd5p5hVCkSdRioeBkJviw@www.ohiovalleycameraclub.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8


2024-05-25T17:42:53+00:00 ERROR 216.196.140.150 mail Error in Mail API: Result: false
2024-05-25T17:42:53+00:00 ERROR 216.196.140.150 mail Error in Mail API: Could not instantiate mail function.
2024-05-25T17:45:23+00:00 DEBUG 216.196.140.150 webauthn.system Injecting WebAuthn Passwordless Login fields in user profile edit page
2024-05-25T17:45:23+00:00 DEBUG 216.196.140.150 webauthn.system Injecting WebAuthn Passwordless Login fields in user profile edit page
2024-05-25T17:45:23+00:00 DEBUG 216.196.140.150 webauthn.system Injecting WebAuthn Passwordless Login fields in user profile edit page
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Sending with mail()
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Sendmail path: /usr/sbin/sendmail -t -i
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Envelope sender:
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: To: "[email protected]" <[email protected]>
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Subject: OVCC: Test Message
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Headers: Date: Sat, 25 May 2024 17:45:23 +0000
From: OVCC <[email protected]>
Reply-To: Rick Hartigan <[email protected]>
Message-ID: <IqdeU7mioCKxZYLhgjHAztD34yamMnB2LW9CHauTQd8@www.ohiovalleycameraclub.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8


2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Result: false
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Could not instantiate mail function.
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Sending with mail()
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Sendmail path: /usr/sbin/sendmail -t -i
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Envelope sender:
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: To: "[email protected]" <[email protected]>
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Subject: OVCC: Test Message
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Headers: Date: Sat, 25 May 2024 17:45:23 +0000
From: OVCC <[email protected]>
Reply-To: Rick Hartigan <[email protected]>
Message-ID: <uNVXOkntmF29HhnV8lSeYqKO7KqERNjbptflW3EjGDE@www.ohiovalleycameraclub.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8


2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Result: false
2024-05-25T17:45:23+00:00 ERROR 216.196.140.150 mail Error in Mail API: Could not instantiate mail function.
2024-05-25T17:45:23+00:00 WARNING 216.196.140.150 jerror Could not instantiate mail function.
2024-05-25T17:45:24+00:00 DEBUG 216.196.140.150 webauthn.system Injecting WebAuthn Passwordless Login fields in user profile edit page
2024-05-25T17:45:24+00:00 DEBUG 216.196.140.150 webauthn.system Injecting WebAuthn Passwordless Login fields in user profile edit page
2024-05-25T17:45:24+00:00 DEBUG 216.196.140.150 webauthn.system Injecting WebAuthn Passwordless Login fields in user profile edit page
2024-05-25T17:45:24+00:00 DEBUG 216.196.140.150 webauthn.system Injecting WebAuthn Passwordless Login fields in user profile edit page
2024-05-25T17:45:25+00:00 CRITICAL 216.196.140.150 error Uncaught Throwable of type Joomla\CMS\Router\Exception\RouteNotFoundException thrown with message "Page not found". Stack trace: #0 [ROOT]/libraries/src/Application/SiteApplication.php(754): Joomla\CMS\Router\Router->parse(Object(Joomla\CMS\Uri\Uri), true)
#1 [ROOT]/libraries/src/Application/SiteApplication.php(244): Joomla\CMS\Application\SiteApplication->route()
#2 [ROOT]/libraries/src/Application/CMSApplication.php(306): Joomla\CMS\Application\SiteApplication->doExecute()
#3 [ROOT]/includes/app.php(58): Joomla\CMS\Application\CMSApplication->execute()
#4 [ROOT]/index.php(32): require_once('/home/ohiova7/o...')
#5 {main}

[AMurray]

Are you using SMTP method for the email setting? The above joomla documentation link you provided is about "debug of SMTP" problems.

Your "everything" log report suggests you're using sendmail, not SMTP.

Sendmail is a server function; is it active on your server? (A question for your web host to confirm).