Security Error: PDF files must be hosted on the same domain as this site.

PDF is hosted on: http://https%3A%2F%2F1893.bg%2Fwp-content%2Fuploads%2F2022%2F01%2F%D0%9D%D0%B0%D0%B9-%D1%85%D1%83%D0%B1%D0%B0%D0%B2%D0%B8%D1%8F%D1%82-%D0%BF%D0%BE%D0%B4%D0%B0%D1%80%D1%8A%D0%BA-%D0%B7%D0%B0-%D0%9A%D0%BE%D0%BB%D0%B5%D0%B4%D0%B0-3-%D0%92%D0%B5%D1%80%D0%BE%D0%BD%D0%B8%D0%BA%D0%B0-%D0%9F%D0%B0%D0%B2%D0%BB%D0%BE%D0%B2%D0%B0.pdf but this site is: https://1893.bg