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

PDF is hosted on: http://http%3A%2F%2Fwww.nan.mcu.ac.th%2Fmcunan%2Fwp-content%2Fuploads%2F2019%2F12%2F%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B8%81%E0%B8%B2%E0%B8%A8%E0%B8%A3%E0%B8%B1%E0%B8%9A%E0%B8%AA%E0%B8%A1%E0%B8%B1%E0%B8%84%E0%B8%A3%E0%B9%80%E0%B8%82%E0%B9%89%E0%B8%B2%E0%B8%A8%E0%B8%B6%E0%B8%81%E0%B8%A9%E0%B8%B2%E0%B8%95%E0%B9%88%E0%B8%AD%E0%B8%A3%E0%B8%B0%E0%B8%94%E0%B8%B1%E0%B8%9A%E0%B8%9B%E0%B8%A3%E0%B8%B4%E0%B8%8D%E0%B8%8D%E0%B8%B2%E0%B8%95%E0%B8%A3%E0%B8%B5-2563.pdf but this site is: https://nan.mcu.ac.th