Angular-CLI proxy to spring boot backend doesn't work

Question

I want to integrate my angular app with spring boot project

 

https://github.com/angular/angular-cli#proxy-to-backend

 

here is an instruction how to do proxying to backend. I did everything step by step and only the first entry route / work .

here my proxy.conf.json file

 

{

"/token/*": {

"target": "http://localhost:8080",

"secure": false,

"logLevel": "debug",

"changeOrigin": true ,

"pathRewrite": {"^/token" : ""} ,

"headers": {

"Connection": "keep-alive"

}

}

}

 

but i got this error

 

Error: Uncaught (in promise): NullInjectorError: StaticInjectorError(to)[a]:

StaticInjectorError(Platform: core)[a]:

NullInjectorError: No provider for a!

NullInjectorError: StaticInjectorError(to)[a]:

StaticInjectorError(Platform: core)[a]:

NullInjectorError: No provider for a!

at rt.get (main-es2015.fb2e7d77856e5a1dfce3.js:1)