When add or configure a forum in a course where select diferent option in "Aggregate type" (Ratings), this forum show error "Invalid context".

Debugin show:
Notice: Undefined property: stdClass::$context in /.../mod/forum/lib.php on line 5321
Notice: Trying to get property of non-object in /.../rating/lib.php on line 297

In function get_ratings (defined in file rating/lib.php) can look that the context get to $PAGE->context, not from $options->context; ¿this is the error?