phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 144 Table './assetanalysiscom/phpbb_sessions' is marked as crashed and last (automatic?) repair failed

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('956fe0011608ab0be5d5d7eeb71eacd1', -1, 1422725919, 1422725919, '36a1931a', -4, 0, 0)

Line : 187
File : sessions.php