It might not be the only problem. I started a new backup on pCloud using WebDav, and on the second run the metadata errors happened for all files in the backup.
I’m also getting some error about not being able to load the Microsoft Azure dll, which seems to correlate with the backup pausing (no activity) for at least 30 minutes. Not sure if that’s related or not though.
Jul 16, 2018 2:31 AM: Failed to load assembly C:\ProgramData\Duplicati\updates\2.0.3.9\Microsoft.WindowsAzure.Storage.dll, error message: Could not load file or assembly 'Microsoft.Data.Services.Client, Version=5.8.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
I have other backups starting on pCloud, we’ll see soon enough if the same is happening or not.