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 ('b0a6b2c9e78abbc1dcc609769a1da4dd', -1, 1432763350, 1432763350, '36919065', -1, 0, 0)

Line : 187
File : sessions.php