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 ('ae41c08683eda2f0265755161a074c0a', -1, 1713549786, 1713549786, '12dd8191', -10, 0, 0)

Line : 187
File : sessions.php