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 ('a9f58da77b03cba725ac6e7a1e7c991a', -1, 1714319394, 1714319394, '030f0a89', -9, 0)

Line : 158
File : sessions.php