The error code DF-DFERH-01 means that there is a problem with the connection between your device and the Google Play Store servers. This can be caused by a number of things, such as:
A weak or unstable internet connection
A problem with your device's date and time settings
An essential service such as Google Services Framework is disabled
A problem with your Google Play Store account
A corrupted cache
If you are getting this error code, here are some things you can try:
Check your internet connection and make sure it is strong and stable.
Restart your device and try again.
Check your device's date and time settings and make sure they are correct.
Sign out of your Google Play Store account and sign back in.
Refresh the cache for Play Store app and Google Play Services
