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 ('2e3739d1208db628bc55b702d34e7d44', -1, 1713960787, 1713960787, '12742ad0', -1, 0, 0)

Line : 187
File : sessions.php