Issue reading metadata

No metadata detected in the following image:
[nr18.png.zip](https://github.com/blueimp/JavaScript-Load-Image/files/7785139/nr18.png.zip)

Real Metadata: 
<img width="718" alt="metadata" src="https://user-images.githubusercontent.com/5874872/147577759-05195d48-3086-49ad-afea-a40498b27c63.png">


