phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1194 Table '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 ('d0b8fcfe2b1acc80d3ef6d5ec66fda2e', -1, 1418846095, 1418846095, '3691d150', 0, 0, 0)

Line : 189
File : sessions.php