I manually backed up my lists to Google drive yesterday and wiped my phone. I went to restore the files and I got this error - restoring the backup failed (end of input at line 1 column 1 path $).
This means that one of the selected files is empty. This can have two causes:
- Google Drive sometimes fails to properly download the file. Try to download the files yourself, then try to restore from the downloaded versions.
- The original backup failed or you backed up to different files. Check if the backup files actually have something in them (they can be read by any text editor).