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 ('586b8f3f74b85535a59c964698b89316', -1, 1475174973, 1475174973, '00000000', 1, 0, 0)

Line : 187
File : sessions.php