phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('bf7be878b22205c0bcda7a39f3c121f4', -1, 1586186917, 1586186917, '03eb42d9', 35, 0)

Line : 158
File : sessions.php