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, session_admin) VALUES ('44f36f368fc4372378973df77f1c1cf2', -1, 1713877930, 1713877930, '030f9c8c', -4, 0, 0)

Line : 187
File : sessions.php