phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1194 Table '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 ('d4436f760226b0ea9d07a104798c4e55', -1, 1436290183, 1436290183, '36a6dc8a', 1, 0, 0)

Line : 189
File : sessions.php