Cant edit CSS after upgrade Topic is solved

[ollimax]

My clubs website has just been upgraded from Joomla 3.XX to 4.2.6. At the same time the PHP version on the server has been updated to 8.0.27.
After installation I found out that the CSS does not match with the DOM and I need to make some cahnges in it. When I try edit CSS, I access it via Site Templates and open the file.

• I get to a following url:
  /administrator/index.php?option=com_templates&view=template&id=10098&file=L2Nzcy90ZW1wbGF0ZS5jc3M%3D&isMedia=0

• The page title is like following (translated from Finnish):
  Editing file _QQ_‎/templates/kallionkantaattikuoro/css/template.css_QQ_ in site template _QQ_kallionkantaattikuoro_QQ_.

• I also get the following error message:
  3 arguments are required, 2 given

This happens with all site templates, also with the one I installed after the upgrade.

What is the issue here?

TIA for help!
Olli

[Per Yngve Berg]

You must get templates that are designed for J4.

Try the Cassiopeia template that are included in J4.

[ollimax]

Thanks Per Yngve,

I tried, same phenomenom there too.

Page
/administrator/index.php?option=com_templates&view=template&id=10171&file=L2Nzcy90ZW1wbGF0ZS5jc3M%3D&isMedia=1
says: 3 arguments required, 2 given

Olli

[Per Yngve Berg]

Have you updated the Finnish Language Pack?

Please select English when you log into the Administratator.

Did you upgrade from 3.10.11?

Please post your FPA. See Red Frame above.

[Slackervaara]

If you ftp to the css-file you can download it and edit it and upload it again.

[ollimax]

Thanks Per Yngve,

I seem to have the latest finnish language pack, but it is still not compatible with my Joomla version. However, you were right, this error does not appear when I change the language in english. So I can use english and wait for the finnish language pack update, if I then need it at all.

Lets hope this solves the problem for now.

Me and Kallio Cantata Choir says thank you!