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 ('5d441ccce9b8c68ea2c181c5473cb60d', -1, 1412246091, 1412246091, '365206f7', -4, 0, 0)

Line : 187
File : sessions.php