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) VALUES ('8cf8ef9dde84b8ecb6dc983b59b8e753', -1, 1481450134, 1481450134, '369de163', 1, 0)

Line : 158
File : sessions.php