Could not HEAD 'https://jitpack.io/com/github/barteksc/android-pdf-viewer/3.2.0-beta.1/android-pdf-viewer-3.2.0-beta.1.pom'. Received status code 401 from server: Unauthorized

When building the project, this error appears.. Could not HEAD 'https://jitpack.io/com/github/barteksc/android-pdf-viewer/3.2.0-beta.1/android-pdf-viewer-3.2.0-beta.1.pom'. Received status code 401 from server: Unauthorized How can I solve this problem please?