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 ('a11dd6b02386a9d42aefee760c878e74', -1, 1550954879, 1550954879, '3692e35c', -4, 0, 0)

Line : 187
File : sessions.php