, not an actual webpage meant to be downloaded. When Android Studio fails to "fetch" or recognize it, it usually points to a configuration sync issue rather than a network problem. Stack Overflow common fixes Sync project with Gradle files : This is the most frequent solution. Go to File > Sync Project with Gradle Files
Android Studio will close, clear out its temporary index files, and reopen. It will then re-index your entire project. Once the indexing bar at the bottom right finishes, check your layout XML file. The error should be resolved. could not fetch http schemas.android.com apk res-auto
Using android: for attributes that belong to the app: (res-auto) namespace—such as srcCompat for AppCompat views—can trigger validation errors. , not an actual webpage meant to be downloaded
The error message (or the similar res/android variant) typically appears in Android Studio when the IDE cannot resolve the namespace URI used for custom or standard attributes in XML layout files . Go to File > Sync Project with Gradle