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 ('c5ab6bc64ad7ba880da08ca546c78992', -1, 1714700895, 1714700895, '12dd6247', -7, 0)

Line : 158
File : sessions.php