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 ('007c309c10d8b7e3411dae0bc5a2ff15', -1, 1418899325, 1418899325, '3693c49f', 53, 0, 0)

Line : 187
File : sessions.php