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 ('922e6c0f2404a06822aa93f7d8eb203b', -1, 1430672341, 1430672341, 'b849126d', -10, 0, 0)

Line : 187
File : sessions.php