mysql server configuration error: sql_mode= ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_ENGINE_SUBSTITUTION

Database Error!

The table 'ctconf' could not be found in the database 'conference_2019'! Either the wrong database was selected or it was not initialized.