Hello Mr Cheng,
There are couple of reasons why such error could appear.
First check the scope of where you have placed the licence key. The licence key should be in the same scope where you add the library file.
Also check if you have added both variables "ZoomChartsLicence" and "ZoomChartsLicenceKey".
Thank you for informing.
Currenlty the text is not wrapping itself because it is a large chunk of text, to simply put it's recognized as that. To fix this you need to add space to the text somewhere in between.