I met some errors when I installed as guides

[Deutsch4534]

on my macOS

I typed commands as follows:

git clone https://github.com/mariodian/lnd-pay.git
cd lnd-pay
npm install

and Run

node server.js

errors like:
node server.js

/Users/sulayman/lnd-pay/node_modules/ln-service/grpc/grpc_credentials.js:33
throw new Error('ExpectedBase64OrHexEncodedMacaroonToCreateCredentials');
^

Error: ExpectedBase64OrHexEncodedMacaroonToCreateCredentials
at module.exports (/Users/sulayman/lnd-pay/node_modules/ln-service/grpc/grpc_credentials.js:33:11)
at module.exports (/Users/sulayman/lnd-pay/node_modules/ln-service/grpc/authenticated_lnd_grpc.js:55:25)
at Object. (/Users/sulayman/lnd-pay/server.js:20:15)
at Module._compile (internal/modules/cjs/loader.js:689:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
at Module.load (internal/modules/cjs/loader.js:599:32)
at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
at Function.Module._load (internal/modules/cjs/loader.js:530:3)
at Function.Module.runMain (internal/modules/cjs/loader.js:742:12)
at startup (internal/bootstrap/node.js:283:19)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! lnd-pay@1.0.0 start: node server.js
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the lnd-pay@1.0.0 start script.