phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1194 Table 'phpbb_importwagen_sessions' is marked as crashed and should be repaired

INSERT INTO phpbb_importwagen_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('281533793e4f92d8c8f7a57dc47c6e4c', -1, 1475064467, 1475064467, '00000000', 1, 0, 0)

Line : 187
File : sessions.php