error from test.html

[jjhesk]

I got this from this console:

VM21:76769 Uncaught (in promise) Error: The parameter "undefined" must be a valid HEX string.
at Object.hexToUtf8 (:76769:15)
at :50:29

[HebeBlock]

Hi, I just ran test.html and several methods are correct, can you provide more error information?