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%A1%D1%82%D0%B5%D1%84%D0%B0%D0%BD%D0%B8-%D0%A1%D1%82%D0%B5%D1%84%D0%B0%D0%BD%D0%BE%D0%B2%D0%B0-%D0%B8-%D0%9C%D0%B0%D1%80%D0%B8%D1%8F-%D0%9A%D0%B0%D0%BB%D0%B8%D0%B1%D0%B0%D1%86%D0%B5%D0%B2%D0%B0.pdf but this site is: https://1893.bg