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 ('71114fe600adeca7841780f4d7cf2146', -1, 1714365872, 1714365872, '12743e2d', -4, 0)

Line : 158
File : sessions.php