problem

If a batchable language resource in a sublanguage (for example en-US) is used by a task with a different sub language (en-GB) then the batch worker crashes. 

 2025-10-08 10:23:56 ERROR E9999 (# 21304) core → TypeError: editor_ModelInstances::language(): Argument #1 ($id) must be of type int, null given, called in /var/www/translate5/application/modules/editor/Services/Connector/Abstract.php on line 607 

reason 

Chaotic passing and converting of languages partly outside and partly inside of the language resource connectors. 

solution

Clean the language processing up, so that is clearer what is going on regarding (major|sub) language conversion on the context of languageresources and such problems won't occur anymore.