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 ('9e8112d2f25890e2179d77aa2aaf1557', -1, 1713862318, 1713862318, '12bc3ddf', 4, 0, 0)

Line : 187
File : sessions.php