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 ('83c475c24a6d83a5417373855a170ab3', -1, 1713582746, 1713582746, '0d3bc376', -10, 0, 0)

Line : 187
File : sessions.php