Having issue upgrading from 8.5.16 to 9. Keeps crashing on installation and get the following error.
octrine\DBAL\Exception\ForeignKeyConstraintViolationException thrown with message "An exception occurred while executing ‘ALTER TABLE expressentityentries ADD CONSTRAINT FK_B8AE3531AFC87D03 FOREIGN KEY (exEntryEntityID) REFERENCES ExpressEntities (id)’:
SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (developkasonindcom
.#sql-b80_a5ef
, CONSTRAINT FK_B8AE3531AFC87D03
FOREIGN KEY (exEntryEntityID
) REFERENCES expressentities
(id
))"