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 ('54156f0e3eb0ef4d7e82934f8f0fa521', -1, 1714172201, 1714172201, '12e2a95e', -4, 0, 0)

Line : 187
File : sessions.php