Error parsing XML, line 666, column 112 The entity name must immediately follow the '&' in the entity reference.
While editing the blogger template html, I faced the below error.Error parsing XML, line , column The entity name must immediately follow the '&' in the entity reference.
This occurs because you have character "&" in the html code. which you need to replace it with "&"
This has solved my issue and I was able to save the html
