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 ('bad970b67d4ac9f5c73d062e0f1c8ffb', -1, 1713426270, 1713426270, '0391a508', -1, 0, 0)

Line : 187
File : sessions.php