Method AUS\SsiInclude\Cache\Backend\SsiIncludeCacheBackend::set() has parameter $tags with no value type specified in iterable type array.

Parameter #2 $data (array<string, string>) of method AUS\SsiInclude\Cache\Backend\SsiIncludeCacheBackend::set() should be compatible with parameter $data (string) of method TYPO3\CMS\Core\Cache\Backend\BackendInterface::set()

Parameter #2 $data (array<string, string>) of method AUS\SsiInclude\Cache\Backend\SsiIncludeCacheBackend::set() should be compatible with parameter $data (string) of method TYPO3\CMS\Core\Cache\Backend\BackendInterface::set()

Parameter #2 $data (array<string, string>) of method AUS\SsiInclude\Cache\Backend\SsiIncludeCacheBackend::set() should be compatible with parameter $data (string) of method TYPO3\CMS\Core\Cache\Backend\BackendInterface::set()

Cannot call method set() on TYPO3\CMS\Core\Cache\Backend\TaggableBackendInterface|null.

Cannot call method get() on TYPO3\CMS\Core\Cache\Backend\TaggableBackendInterface|null.

Cannot call method has() on TYPO3\CMS\Core\Cache\Backend\TaggableBackendInterface|null.

Cannot call method remove() on TYPO3\CMS\Core\Cache\Backend\TaggableBackendInterface|null.

Cannot call method flush() on TYPO3\CMS\Core\Cache\Backend\TaggableBackendInterface|null.

Cannot call method collectGarbage() on TYPO3\CMS\Core\Cache\Backend\TaggableBackendInterface|null.