[Resolved] Backend crashes when trying to open posts, translations

Hello and thank you for contacting us.
The pastebin link reports that it has expired, so I cannot see the error.
Could you please provide the error log once more time?

As usual issues, I would suggest increasing the memory.

You can do it by setting or changing this entry if already exists in wp-config.php

define( 'WP_MEMORY_LIMIT', '256M' );
define( 'WP_MAX_MEMORY_LIMIT', '256M' );