いつもお世話になります。
マスターファイルの更新をするとエラーが出ます。
どう対処すればいいですか？
Version:20200731版
Ionic.Zip.ZipException: The file D:\Documents\RPPCAL\y.csv already exists.
場所 System.Net.ChunkParser.CompleteUserRead(Object result)
場所 System.Net.ChunkParser.ReadCallback(IAsyncResult ar)
場所 System.Net.LazyAsyncResult.Complete(IntPtr userToken)
場所 System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
場所 System.Net.Security._SslStream.ProcessFrameBody(Int32 readBytes, Byte[] buffer, Int32 offset, Int32 count, AsyncProtocolRequest asyncRequest)
場所 System.Net.Security._SslStream.ReadFrameCallback(AsyncProtocolRequest asyncRequest)
場所 System.Net.AsyncProtocolRequest.CompleteRequest(Int32 result)
場所 System.Net.FixedSizeReader.CheckCompletionBeforeNextRead(Int32 bytes)
場所 System.Net.FixedSizeReader.ReadCallback(IAsyncResult transportResult)
場所 System.Net.LazyAsyncResult.Complete(IntPtr userToken)
場所 System.Net.ContextAwareResult.CompleteCallback(Object state)
場所 System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
場所 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
場所 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
場所 System.Net.ContextAwareResult.Complete(IntPtr userToken)
場所 System.Net.LazyAsyncResult.ProtectedInvokeCallback(Object result, IntPtr userToken)
場所 System.Net.Sockets.BaseOverlappedAsyncResult.CompletionPortCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* nativeOverlapped)
場所 System.Threading._IOCompletionCallback.PerformIOCompletionCallback(UInt32 errorCode, UInt32 numBytes, NativeOverlapped* pOVERLAP)

mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
RPPMAN, Version=2.99.7517.21201, Culture=neutral, PublicKeyToken=null
System.Data, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
System.Core, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
GalaSoft.MvvmLight, Version=5.3.0.19038, Culture=neutral, PublicKeyToken=0e453835af4ee6ce
System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
System.Drawing, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
WindowsBase, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
PresentationCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
System.Xaml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
System.Configuration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
System.Xml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
SimpleInjector, Version=3.2.2.0, Culture=neutral, PublicKeyToken=984cb50dea722e99
System.Runtime, Version=2.6.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
RPPLib, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null
Microsoft.Practices.ServiceLocation, Version=1.3.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
mscorlib.resources, Version=4.0.0.0, Culture=ja, PublicKeyToken=b77a5c561934e089
Anonymously Hosted DynamicMethods Assembly, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null
SimpleInjector.Compiled, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null
PresentationFramework.Aero2, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
System.Threading.Tasks, Version=2.6.10.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
Microsoft.Threading.Tasks, Version=1.0.12.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
PresentationFramework-SystemXml, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
PresentationCore.resources, Version=4.0.0.0, Culture=ja, PublicKeyToken=31bf3856ad364e35
UIAutomationTypes, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
UIAutomationProvider, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
System.Deployment, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
System.Deployment.resources, Version=4.0.0.0, Culture=ja, PublicKeyToken=b03f5f7f11d50a3a
Microsoft.VisualBasic, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
System.Data.resources, Version=4.0.0.0, Culture=ja, PublicKeyToken=b77a5c561934e089
System.Transactions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
System.EnterpriseServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
System.Numerics, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
System.Data.DataSetExtensions, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
HtmlAgilityPack, Version=1.4.9.5, Culture=neutral, PublicKeyToken=bd319b19eaf3b43a
WindowsFormsIntegration, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
PresentationFramework.resources, Version=4.0.0.0, Culture=ja, PublicKeyToken=31bf3856ad364e35
PresentationFramework-SystemCore, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
DotNetZip, Version=1.10.1.0, Culture=neutral, PublicKeyToken=6583c7c814667745