phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpbb/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 ('fcffa318312aa852ad7cb42c5a1fa13f', -1, 1495551327, 1495551327, '6b166a88', -1, 0, 0)

Line : 187
File : sessions.php