Invalid class dbal, should be \phpbb\db\driver\driver
Parameter $cache of the contructor should be \phpbb\cache\service in the doc block as it is type casted anyway
Parameter $include_path of method add() is unused, Should it be used? it's used in the remove() method
The fetched field does not match any selected column.
Also the variable module_name is unused later, therefor we could just remove the query from the else all together:
EXreaction [X] can you have a look?