Getting error:

> 
> Gradleconnectioncheck:app:unspecified Could not resolve
>  com.github.pstovk:MaterialDesignLibrary:1.3.
> 
> 
> 
> > 
> > Could not GET '<https://jcenter.bintray.com/com/github/pstovk/MaterialDesignLibrary/1.3/MaterialDesignLibrary-1.3.pom>'.
> >  jcenter.bintray.com
> > 
> > 
> > 
> 
> 
> 

1. I've used proxy setting in Android Studio.
And also tried this solution ([Link](https://stackoverflow.com/questions/13828787/gradle-cant-resolve-dependencies-through-my-http-proxy)) which sets proxy in gradle, but It didn't work.

settings:

```
systemProp.https.proxyHost=http-proxy.nwie.net
systemProp.https.proxyPort=8080
systemProp.https.proxyUser=http-proxy.nwie.net/%USERNAME%
systemProp.https.proxyPassword=%PASSWORD%`

```

2. There is already `jcenter()` in build.gradle, which was suggested in [Link](https://stackoverflow.com/questions/29824809/gradle-fails-to-resolve-dependency-in-android-studio)

code:

```
repositories {
    jcenter()
}

```