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 ('5382f9a19f4db362136601305ae65f50', -1, 1580206669, 1580206669, '12cff023', -4, 0)

Line : 158
File : sessions.php