PHP Warning: Undefined array key "config" / Trying to access array offset on value of type null

[medarob]

An editor translated a page and I noticed the following errors/warnings in the log:

warning | php | Core: Error handler (BE): PHP  Warning: Trying to access array offset on value of type null in  /var/www/typo3/vendor/dmitryd/dd-deepl/Classes/Service/DeeplTranslationService.php  line 458

warning | php | Core: Error handler (BE): PHP  Warning: Undefined array key "config" in  /var/www/typo3/vendor/dmitryd/dd-deepl/Classes/Service/DeeplTranslationService.php  line 458

warning | php | Core: Error handler (BE): PHP  Warning: Trying to access array offset on value of type null in  /var/www/typo3/vendor/dmitryd/dd-deepl/Classes/Service/DeeplTranslationService.php  line 449

warning | php | Core: Error handler (BE): PHP  Warning: Undefined array key "config" in  /var/www/typo3/vendor/dmitryd/dd-deepl/Classes/Service/DeeplTranslationService.php  line 449

warning | php | Core: Error handler (BE): PHP  Warning: Trying to access array offset on value of type null in  /var/www/typo3/vendor/dmitryd/dd-deepl/Classes/Service/DeeplTranslationService.php  line 427

warning | php | Core: Error handler (BE): PHP  Warning: Undefined array key "config" in  /var/www/typo3/vendor/dmitryd/dd-deepl/Classes/Service/DeeplTranslationService.php  line 427

I'm not sure what had caused this. There were no errors reported by the editor.

TYPO3 11.5.41, PHP 8.2.27