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 ('ae9e36861e3fa5387ba2d3c0f7f077c3', -1, 1713447928, 1713447928, '2cd295cd', -11, 0, 0)

Line : 187
File : sessions.php