magic number Error in GZip

Hi,

while uncompressing the file i am getting below error

Error: 0x0 at Unziping compressed file, Error: : The magic number in GZip header is not correct. Make sure you are passing in a GZip stream.

Error: 0x8 at Unziping compressed file: The script returned a failure result.

Task failed: Unziping compressed file

please help

Thanks