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 ('88edd3f96c4832ab67cc82367fa3b953', -1, 1713501499, 1713501499, '03914e5f', -1, 0, 0)

Line : 187
File : sessions.php