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 ('8fc866d2dbb50f6ef7a5418b7f2a7a04', -1, 1714721674, 1714721674, '340e820d', -2, 0)

Line : 158
File : sessions.php