phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './private_phpb1/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 ('5f647e7d1c4f24410b1acd16541f8203', -1, 1419074912, 1419074912, '36a6ffa8', 9, 0, 0)

Line : 187
File : sessions.php