Error 3 Error occurred in deployment step 'Activate Features': urlOfFile Parameter name: Specified value is not supported for the urlOfFile parameter. [closed]

Question

I tried creating a content type using code, and when I deploy I got this error, however when I go to the site, the content type is created,

 public override void FeatureActivated(SPFeatureReceiverProperties properties)
    {
        SPWeb web = null;
        if (properties.Feature.Parent is SPSite)
        {
            SPSite sites = (SPSite)properties.Feature.Parent;
            web = sites.RootWeb;
        }
        else
        {
            web = (SPWeb)properties.Feature.Parent;
        }
        if (web == null)
            return;

        /* CREATE SITE COLUMNS */

        string columnGroup = "Financial Columns";

        // Amount
        string amountFieldName = web.Fields.Add("Amount", SPFieldType.Currency, false);
        SPFieldCurrency amountField = (SPFieldCurrency)web.Fields.GetFieldByInternalName(amountFieldName);
        amountField.Group = columnGroup;
        amountField.DisplayFormat = SPNumberFormatTypes.TwoDecimals;
        amountField.MinimumValue = 0;
        amountField.Update();

        // Client Name
        string clientFieldName = web.Fields.Add("Client Name", SPFieldType.Text, false);
        SPFieldText clientField = (SPFieldText)web.Fields.GetFieldByInternalName(clientFieldName);
        clientField.Group = columnGroup;
        clientField.Update();

        // Date Opened
        string dateOpenedFieldName = web.Fields.Add("Date Opened", SPFieldType.DateTime, false);
        SPFieldDateTime dateOpenedField = (SPFieldDateTime)web.Fields.GetFieldByInternalName(dateOpenedFieldName);
        dateOpenedField.Group = columnGroup;
        dateOpenedField.DisplayFormat = SPDateTimeFieldFormatType.DateOnly;
        dateOpenedField.DefaultValue = "[today]";
        dateOpenedField.Update();

        // Cost Center Name
        string costCenterFieldName = web.Fields.Add("Cost Center", SPFieldType.Choice, false);
        SPFieldChoice costCenterField = (SPFieldChoice)web.Fields.GetFieldByInternalName(costCenterFieldName);
        costCenterField.Choices.Add("Administration");
        costCenterField.Choices.Add("Information Services");
        costCenterField.Choices.Add("Facilities");
        costCenterField.Choices.Add("Operations");
        costCenterField.Choices.Add("Sales");
        costCenterField.Choices.Add("Marketing");
        costCenterField.Group = columnGroup;
        costCenterField.Update();

        /* CREATE SITE CONTENT TYPES */

        string contentTypeGroup = "Financial Content Types";

        // Get a content type to be the parent of a new Financial Document content type.
        SPContentType documentCType = web.AvailableContentTypes[SPBuiltInContentTypeId.Document];

        // Create the Financial Document content type.
        SPContentType financialDocumentCType = new SPContentType(documentCType, web.ContentTypes, "Financial Document");

        // Note: A content type is not initialized until after it is added.
        financialDocumentCType = web.ContentTypes.Add(financialDocumentCType);
        financialDocumentCType.Group = contentTypeGroup;

        // Add the Date Opened column. Child content types inherit the column.
        SPFieldLink dateOpenedFieldRef = new SPFieldLink(dateOpenedField);
        dateOpenedFieldRef.Required = true;
        financialDocumentCType.FieldLinks.Add(dateOpenedFieldRef);

        // Add the Amount column. Child content types inherit the column.
        SPFieldLink amountFieldRef = new SPFieldLink(amountField);
        financialDocumentCType.FieldLinks.Add(amountFieldRef);

        // Commit changes.
        financialDocumentCType.Update();

        // Create the Invoice content type.
        SPContentType invoiceCType = new SPContentType(financialDocumentCType, web.ContentTypes, "Invoice");
        invoiceCType = web.ContentTypes.Add(invoiceCType);
        invoiceCType.Group = contentTypeGroup;

        // Modify the Title column inherited from the parent.
        SPFieldLink serviceFieldRef = invoiceCType.FieldLinks[SPBuiltInFieldId.Title];
        serviceFieldRef.DisplayName = "Service";
        serviceFieldRef.Required = true;

        // Add the Client column.
        SPFieldLink clientFieldRef = new SPFieldLink(clientField);
        clientFieldRef.Required = true;
        invoiceCType.FieldLinks.Add(clientFieldRef);

        // Specify a document template.
        invoiceCType.DocumentTemplate = "Invoice.docx";

        // Commit changes.
        invoiceCType.Update();

        // Create the Purchase Order content type.
        SPContentType purchaseOrderCType = new SPContentType(financialDocumentCType, web.ContentTypes, "Purchase Order");
        purchaseOrderCType = web.ContentTypes.Add(purchaseOrderCType);
        purchaseOrderCType.Group = contentTypeGroup;

        // Modify the Title column inherited from the parent.
        SPFieldLink itemFieldRef = purchaseOrderCType.FieldLinks[SPBuiltInFieldId.Title];
        itemFieldRef.DisplayName = "Item";
        itemFieldRef.Required = true;

        // Add the Department column.
        SPFieldLink departmentFieldRef = new SPFieldLink(costCenterField);
        departmentFieldRef.DisplayName = "Department";
        departmentFieldRef.Required = true;
        purchaseOrderCType.FieldLinks.Add(departmentFieldRef);

        // Specify a document template.
        purchaseOrderCType.DocumentTemplate = "PurchaseOrder.docx";

        // Commit changes.
        purchaseOrderCType.Update();

    }