Creating new Page raises errors (docker)

[git-gnulf]

Hi all,
I ve run the docker-pack. If I create a new Page or Post, I get Php-Errors:
`Warning
: Undefined array key "post_content" in
/var/www/html/admin/controller/content/edit.php
on line
314

Warning
: http_response_code(): Cannot set response code - headers already sent (output started at /var/www/html/admin/controller/content/edit.php:314) in
/var/www/html/system/core/frontcontroller.php
on line
115`
What could be the reason for this? I used the simple docker-compose.yml from the Install-Docs and selected the sqlite db during installation. Everything went smoothly.
When creating a new page (or post), nothing is visible under the ‘General’ tab. When I press save, these errors appear.
Does anyone have an idea what I could do?

[givanz]

Hi

If there is nothing visible under general tab then this is probably related to language configuration.

You must have a default language configured and active.

[git-gnulf]

@givanz That's it! Thank you very much. That was the solution. ... sometimes I'm just blind 😉