Build failing with following error upon adding gradle dependency

[vikash010890]

I don't have jCenter() in my project. 1: Task failed with an exception.

• What went wrong: Execution failed for task ':app:mergeCarefirstDebugResources'.

  Could not resolve all files for configuration ':app:carefirstDebugRuntimeClasspath'. Could not resolve com.paytm:pgplussdk:1.4.4. Required by: project :app Could not resolve com.paytm:pgplussdk:1.4.4. Could not parse POM https://tokbox.com/maven/com/paytm/pgplussdk/1.4.4/pgplussdk-1.4.4.pom Already seen doctype. Could not resolve com.paytm:pgplussdk:1.4.4. Could not get resource 'http://tokbox.com/maven/com/paytm/pgplussdk/1.4.4/pgplussdk-1.4.4.pom'. Could not HEAD 'http://tokbox.com/maven/com/paytm/pgplussdk/1.4.4/pgplussdk-1.4.4.pom'. Connect to tokbox.com:80 [tokbox.com/168.100.113.118] failed: connect timed out Could not resolve com.github.barteksc:android-pdf-viewer:2.8.2. Required by: project :app Could not resolve com.github.barteksc:android-pdf-viewer:2.8.2. Could not get resource 'https://jitpack.io/com/github/barteksc/android-pdf-viewer/2.8.2/android-pdf-viewer-2.8.2.pom'. Could not HEAD 'https://jitpack.io/com/github/barteksc/android-pdf-viewer/2.8.2/android-pdf-viewer-2.8.2.pom'. Received status code 401 from server: Unauthorized Could not resolve com.github.barteksc:android-pdf-viewer:2.8.2. Could not parse POM https://tokbox.com/maven/com/github/barteksc/android-pdf-viewer/2.8.2/android-pdf-viewer-2.8.2.pom Already seen doctype. Could not resolve com.github.barteksc:android-pdf-viewer:2.8.2. Could not get resource 'http://tokbox.com/maven/com/github/barteksc/android-pdf-viewer/2.8.2/android-pdf-viewer-2.8.2.pom'. Could not HEAD 'http://tokbox.com/maven/com/github/barteksc/android-pdf-viewer/2.8.2/android-pdf-viewer-2.8.2.pom'. Connect to tokbox.com:80 [tokbox.com/168.100.113.118] failed: connect timed out Could not resolve com.android.volley:volley:1.1.1. Required by: project :app > com.google.android.libraries.places:places:2.4.0 Could not resolve com.android.volley:volley:1.1.1. Could not parse POM https://tokbox.com/maven/com/android/volley/volley/1.1.1/volley-1.1.1.pom Already seen doctype. Skipped due to earlier error

• Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

2: Task failed with an exception.

• What went wrong: Execution failed for task ':app:checkCarefirstDebugAarMetadata'.

  Could not resolve all files for configuration ':app:carefirstDebugRuntimeClasspath'. Could not resolve com.paytm:pgplussdk:1.4.4. Required by: project :app Could not resolve com.paytm:pgplussdk:1.4.4. Could not parse POM https://tokbox.com/maven/com/paytm/pgplussdk/1.4.4/pgplussdk-1.4.4.pom Already seen doctype. Could not resolve com.paytm:pgplussdk:1.4.4. Could not get resource 'http://tokbox.com/maven/com/paytm/pgplussdk/1.4.4/pgplussdk-1.4.4.pom'. Could not HEAD 'http://tokbox.com/maven/com/paytm/pgplussdk/1.4.4/pgplussdk-1.4.4.pom'. Connect to tokbox.com:80 [tokbox.com/168.100.113.118] failed: connect timed out Could not resolve com.github.barteksc:android-pdf-viewer:2.8.2. Required by: project :app Could not resolve com.github.barteksc:android-pdf-viewer:2.8.2. Could not get resource 'https://jitpack.io/com/github/barteksc/android-pdf-viewer/2.8.2/android-pdf-viewer-2.8.2.pom'. Could not HEAD 'https://jitpack.io/com/github/barteksc/android-pdf-viewer/2.8.2/android-pdf-viewer-2.8.2.pom'. Received status code 401 from server: Unauthorized Could not resolve com.github.barteksc:android-pdf-viewer:2.8.2. Could not parse POM https://tokbox.com/maven/com/github/barteksc/android-pdf-viewer/2.8.2/android-pdf-viewer-2.8.2.pom Already seen doctype. Could not resolve com.github.barteksc:android-pdf-viewer:2.8.2. Could not get resource 'http://tokbox.com/maven/com/github/barteksc/android-pdf-viewer/2.8.2/android-pdf-viewer-2.8.2.pom'. Could not HEAD 'http://tokbox.com/maven/com/github/barteksc/android-pdf-viewer/2.8.2/android-pdf-viewer-2.8.2.pom'. Connect to tokbox.com:80 [tokbox.com/168.100.113.118] failed: connect timed out Could not resolve com.android.volley:volley:1.1.1. Required by: project :app > com.google.android.libraries.places:places:2.4.0 Could not resolve com.android.volley:volley:1.1.1. Could not parse POM https://tokbox.com/maven/com/android/volley/volley/1.1.1/volley-1.1.1.pom Already seen doctype. Skipped due to earlier error