phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './tripleac_Forum/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 ('af114b9be15dade3d831237721cfb9e1', -1, 1414016590, 1414016590, '36d3d4ae', 20, 0, 0)

Line : 187
File : sessions.php