When I try to use this construction

await using var ftpClient = await CreateFtpClientAsync();

I receive this error: 'Method not found: 'System.Threading.Tasks.Task FluentFTP.AsyncFtpClient.DisposeAsync()'

To make a workaround, I need to remove 'await' keyword before using the statement to use synchronous Dispose instead of DisposeAsync().
Can you please look at this issue?