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 ('d38bc9fe97bd8f44ed7c596c6c1598e0', -1, 1713998950, 1713998950, '038fda92', -7, 0, 0)

Line : 187
File : sessions.php