kk_downloader plugin throws error on TYPO3 8.7.50

[tobiasschaeferptb]

Dear JWeiland Team,

after selecting a Record Storage Page in the kk_downloader plugin and selecting LIST and SINGLE as view an error happens in the frontend. The TYPO3 log shows this error:
Core: Exception handler (WEB): Uncaught TYPO3 Exception: Class 'TYPO3\CMS\Core\Context\Context' not found | Error thrown in file /srv/www/libs/typo3_src-8.7.50/typo3/sysext/core/Classes/Utility/GeneralUtility.php in line 3977.
The TYPO3 version is 8.7.50 and the kk_downloader version is 5.2.5.

Best regards,
Tobias Schäfer