[TypeError: null is not an object (evaluating 'TcxAPI.callTcxApi')]

[anjurochan]

i already follow the instructiion of https://github.com/consenlabs/token-core/tree/dev/examples/RN,

but when i click "create" button in RN EXAMPLE,there is some error in logs like

[TypeError: null is not an object (evaluating 'TcxAPI.callTcxApi')]

does some kind person could tell me what's going on and how to fix it, very appreciate...