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 ('c70dd668d15afd9a631e77ac8d1bf630', -1, 1713270012, 1713270012, '0311064b', 7, 0, 0)

Line : 187
File : sessions.php