i started to test cloud platofrm recently , i configured ,zone,pod , cluster , host , primary storage and secondary storage and its working normally ,  but when registering ISO images statues of it  "Template content is unsupported, or mismatch between selected format and template content. Found : HTML document, ASCII text, with very long lines, with CRLF, LF line terminators"

Any idea how can i solve this problem 

Best Regards