Update 19.0.7 to 20.0.5 unsuccessful

[Schmu]

Maybe this can help:

NC19 SQLSTATE[42000]: Syntax error or access violation: 1071 Specified key was too long; max key length is 1000 bytes while executing 'CREATE INDEX properties_path_index ON oc_properties (userid, propertypath)'

Hello. Contains your my.cnf file the innodb_large_prefix=true entry under [mysqld]-section? This increases the byte limit up to 3072 bytes for index prefixes.