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 ('c61080f04e179c32f70f19d93e5e7a10', -1, 1398240239, 1398240239, '36f30d1e', 25, 0, 0)

Line : 187
File : sessions.php