The issue is that the server is responding with an invalid Content-Encoding token. Valid values are (by The Internet Assigned Numbers Authority (IANA)):
gzip An encoding format produced by the file compression program "gzip" (GNU zip) as described in RFC 1952 . This format is a Lempel-Ziv coding (LZ77) with a 32 bit CRC.
compress The encoding format produced by the common UNIX file compression program "compress". This format is an adaptive Lempel-Ziv-Welch coding (LZW).
deflate The "zlib" format defined in RFC 1950  in combination with the "deflate" compression mechanism described in RFC 1951 .
identity The default (identity) encoding; the use of no transformation whatsoever. This content-coding is used only in the Accept- Encoding header, and SHOULD NOT be used in the Content-Encoding header.