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 ('4e4b7ed4fe3a4096c24d3de20dc49734', -1, 1713515403, 1713515403, '0389b420', -2, 0, 0)

Line : 187
File : sessions.php