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 ('fe336b7a7335cabe9658668e73da3394', -1, 1713897818, 1713897818, '12dfacfc', -10, 0, 0)

Line : 187
File : sessions.php