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 ('a80a21d8af7f1dd4439821e25ca2f3ec', -1, 1511297998, 1511297998, '36c42f80', 0, 0, 0)

Line : 189
File : sessions.php