Exception after saving an xlf file

After saving an xlf file, I get exception #1476107295. I'm using DDEV (https://ddev.readthedocs.io/en/stable/) in version v1.21.4 as local development environment with Docker 20.10.21 on Manjaro Linux. Typo3 version 10.4.34 is installed and deployed via composer. The xlf files have rights mask 664.

The following is the message listed in the system log.

Core: Exception handler (WEB): Uncaught TYPO3 Exception: #1476107295: PHP Warning: htmlspecialchars() expects parameter 1 to be string, array given in /var/www/html/public/typo3conf/ext/lfeditor/Classes/Service/FileBaseXLFService.php line 267 | TYPO3\CMS\Core\Error\Exception thrown in file /var/www/html/public/typo3/sysext/core/Classes/Error/ErrorHandler.php in line 134. Requested URL: https://ddev-jmd.ddev.site/typo3/index.php?route=%%2Fmodule%%2Fuser%%2FLfeditorLfeditor&token=--AnonymizedToken--&tx_lfeditor_user_lfeditorlfeditor%%5Baction%%5D=editFileSave&tx_lfeditor_user_lfeditorlfeditor%%5Bcontroller%%5D=EditFile