Uploading item(s) to folder ... ' failed due to the following error: Not Found

This only occurs when first opening eM Client. Below is the log.

4:11:03 PM emailaddress [POP3]  Disconnected: Done

4:11:04 PM   MailExceptions.OperationException: Uploading item(s) to folder emailaddress/emailaddress’ failed due to the following error: Not Found —> Google.GoogleApiRequestException: Google.Apis.Requests.RequestError

4:11:04 PM Not Found [404]

4:11:04 PM Errors [

4:11:04 PM    Message[Not Found] Location[-] Reason[notFound] Domain[global]

4:11:04 PM ]

4:11:04 PM  —> System.Net.WebException: The remote server returned an error: (404) Not Found.

4:11:04 PM    at System.Net.HttpWebRequest.EndGetResponse(IAsyncResult asyncResult)

4:11:04 PM    at Google.Apis.Requests.Request.InternalEndExecuteRequest(IAsyncResult asyncResult)

4:11:04 PM    — End of inner exception stack trace —

4:11:04 PM    at Google.Apis.Requests.ServiceRequest`1.EndFetchInternal(IAsyncResult asyncResult)

4:11:04 PM    at Google.Apis.Requests.ServiceRequest`1.EndFetch(IAsyncResult asyncResult)

4:11:04 PM    at MailClient.Protocols.Gdata.FetchHelper.FetchWithCancellation[T](ServiceRequest`1 request, CancellationToken cancellationToken)

4:11:04 PM    at MailClient.Protocols.Gdata.CalendarItemSynchronizer.Upload(IItemUploadContext1 uploadContext, Folder folder, IEnumerable1 items, CancellationToken cancellationToken)

4:11:04 PM    at MailClient.Protocols.Common.ItemSynchronizer`2.<>c__DisplayClass20.b__1c(WorkerStatus
status, CancellationToken cancellationToken)

4:11:04 PM    at MailClient.Protocols.Gdata.GenericGapiCommand.Execute(WorkerStatus status)

4:11:04 PM    — End of inner exception stack trace —