I try to translate some labels in a mask content element (TYPO3 10). I first created the mask element and mask created a directory "typo3conf/ext/mask_project". I created the file "typo3conf/ext/mask_project/Resources/Private/Language/locallang.xlf" and put a label "read_more" in there.
In my FLUID template ("typo3conf/ext/mask_project/Resources/Private/Mask/Frontend/Templates/Staff.html") I tried:
<f:translate key="EXT:mask_project/Resources/Private/Language/locallang.xlf:read_more" />
<f:translate key="LLL:EXT:mask_project/Resources/Private/Language/locallang.xlf:read_more" />
Unfortunately nothing is printed out. Does anyone has an idea?