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 ('5da1f42147649f73f9b041efd6f3b595', -1, 1464428870, 1464428870, '36a7c85e', -1, 0, 0)

Line : 172
File : sessions.php