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 ('ac686f4d7fa160f43c60426619232470', -1, 1550491969, 1550491969, '22e2d0b9', 1, 0, 0)

Line : 187
File : sessions.php