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-%D0%B3%D0%BE%D0%BB%D0%B5%D0%BC%D0%B8%D1%8F%D1%82-%D0%BA%D0%BE%D0%BB%D0%B5%D0%B4%D0%B5%D0%BD-%D0%BF%D0%BE%D0%B4%D0%B0%D1%80%D1%8A%D0%BA-%D0%94%D0%B0%D1%80%D0%B8%D1%8F.pdf but this site is: https://1893.bg