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 ('b6ebcf5cb7f12304c1a6ed581b0c187a', -1, 1714722610, 1714722610, '12d90672', -4, 0)

Line : 158
File : sessions.php