Error in TYPO3 9

when installing on TYPO3 9.5.13 i get this error:

Class T3o\T3oMembership\Domain\Model\Member does not exist. Reflection failed. More information regarding this error might be available

Edited Jan 25, 2020 by Markus Dübbert

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information