You are using a TypoScript Template for TYPO3 10.4 but your TYPO3 version is smaller. Please replace the template "Org [01.0.0] Basis" with "Org [01.0.0] Basis (TYPO3 8.7)"
This is a prompt by the EXT:org. Sorry for the trouble. Netzmacher\Org\Userfunc\ContentUserfunc::WarnIfisSmallerThan100#92
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