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 ('4cb9011b7570e8892b6d571c91b0e628', -1, 1713519363, 1713519363, '127768ee', 3, 0, 0)

Line : 187
File : sessions.php