phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './mayashan_phpb1/phpbb_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('e487a2acd18f862ad29e0e1fba19703b', -1, 1475046368, 1475046368, '36c4992e', 0, 0, 0)

Line : 187
File : sessions.php