System.Web.UI.ViewStateException: Viewstate inválido. 
	Client IP: 206.0.13.172
	Port: 2636
	Referer: http://saomarcos.nfse-tecnos.com.br/con_servicoprestadonfse.aspx
	Path: /con_servicoprestadonfse.aspx
	User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.0.0 Safari/537.36
	ViewState: 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... ---> System.FormatException: Comprimento inválido para uma matriz ou uma cadeia de caracteres de Base 64.
   em System.Convert.FromBase64_Decode(Char* startInputPtr, Int32 inputLength, Byte* startDestPtr, Int32 destLength)
   em System.Convert.FromBase64CharPtr(Char* inputPtr, Int32 inputLength)
   em System.Convert.FromBase64String(String s)
   em System.Web.UI.ObjectStateFormatter.Deserialize(String inputString, Purpose purpose)
   em System.Web.UI.ObjectStateFormatter.System.Web.UI.IStateFormatter2.Deserialize(String serializedState, Purpose purpose)
   em System.Web.UI.Util.DeserializeWithAssert(IStateFormatter2 formatter, String serializedState, Purpose purpose)
   em System.Web.UI.HiddenFieldPageStatePersister.Load()
   --- Fim do rastreamento de pilha de exceções internas --- Referência de objeto não definida para uma instância de um objeto.