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 ('7978a46666ad2e5492b0e8dc8252d8c3', -1, 1713555331, 1713555331, '030e8e73', -1, 0, 0)

Line : 187
File : sessions.php