PossiblyNullReference: Cannot call method getCurrentRequest on possibly null value (reported by psalm)

PossiblyNullIterator: Cannot iterate over nullable var ContaoCommunityAlliance\DcGeneral\Data\LanguageInformationCollectionInterface|null (reported by psalm)

PossiblyNullArgument: Argument 1 of ContaoCommunityAlliance\DcGeneral\Data\MultiLanguageDataProviderInterface::setCurrentLanguage cannot be null, possibly null value provided (reported by psalm)

InvalidArgument: Argument 1 of ContaoCommunityAlliance\DcGeneral\Data\MultiLanguageDataProviderInterface::setCurrentLanguage expects string, but ContaoCommunityAlliance\DcGeneral\Data\LanguageInformationInterface|null provided (reported by psalm)