png not working

[leahein]

I love the tool! However, after clicking the png button on the site, nothing happens.

The web console produces the following error:

InvalidCharacterError: String contains an invalid character graphql-visualizer:295
    b64toBlob http://nathanrandal.com/graphql-visualizer/:295
    handler http://nathanrandal.com/graphql-visualizer/:257

This happens with all schemas, including the sample provided on the home page.

[NathanRSmith]

Thanks for the heads up. I'll take a look