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 ('6462b787d9937b3e69aec3177b6ce002', -1, 1711656300, 1711656300, '03578545', 3, 0, 0)

Line : 187
File : sessions.php