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 ('e8b0b48f903ceb9e8aff87893ed0d62a', -1, 1714651804, 1714651804, '12df861d', -4, 0)

Line : 158
File : sessions.php