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 ('88b0c0cba1af52d6d3874f42f9f30e13', -1, 1714793963, 1714793963, '038be92b', 9, 0)

Line : 158
File : sessions.php