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 ('74ea9209daa5e80cc3f6fa56e25f15ab', -1, 1472455173, 1472455173, '17140c22', 13, 0, 0)

Line : 187
File : sessions.php