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 ('ff0927a2faceec81ecd3438cb1e2120d', -1, 1467006111, 1467006111, '36c6ff48', 80, 0, 0)

Line : 187
File : sessions.php