bp_core_new_subnav_item shows new group tab but returns 404 when the tab runs. Works on another page

bp_core_new_subnav_item shows new group tab but returns 404 when the tab runs. Works on another page

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)