phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 145 Table './phpbb_1/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) VALUES ('0409f0d2c0d9948fe2aa63a1c74875c3', -1, 1414810436, 1414810436, '36c65e4c', -1, 0)

Line : 158
File : /forum/includes/sessions.php