Pull Request previewer not working with errors after loading

[LukaszJaro]

Hi,

I tried multiple different PRs and same result:

Warning: file_get_contents(/wordpress/playground-consts.json): Failed to open stream: No such file or directory in /wordpress/wp-config.php on line 2

Warning: foreach() argument must be of type array|object, null given in /wordpress/wp-config.php on line 3

Warning: Cannot modify header information - headers already sent by (output started at /wordpress/wp-config.php:2) in /wordpress/wp-includes/pluggable.php on line 1435

Warning: Cannot modify header information - headers already sent by (output started at /wordpress/wp-config.php:2) in /wordpress/wp-includes/pluggable.php on line 1438

Using this url https://playground.wordpress.net/wordpress.html

[adamziel]

Thank you for reporting @LukaszJaro!

A part of the issue was related to this issue and should get fixed on the next website deploy later today: #736

There's still the part where it issues a warning, let's fix that next.

We should add an E2E test to the GH repo to keep verifying this workflow.