When loading a PDF generated with PdfProcessing in PDF Accessibility Checker 2021 (PAC) an exception is thrown: "Object reference not set to an instance of an object".

It is reproducible with all PdfComplianceLevel export options.

Introduce API for setting Image opacity.

The attached Workaround demonstrates how to change the opacity of the image before inserting it into the document.

Import the document with RadSpreadProcessing and export it PDF format. You will notice that the cell value is displayed in the exported PDF document while in the Excel file it is hidden due to the custom format:

Currently, a NullReferenceException is thrown because of the incorrect structure. 

As a workaround, the exception can be handled using the Handling Exceptions mechanism.

Update:
When importing documents with invalid structure of path construction operators an InvalidGraphicOperandsCountException is thrown which could be handled using the Handling Exceptions mechanism.

PdfFormatProvider provider = new PdfFormatProvider();
provider.ImportSettings.DocumentUnhandledException += this.ImportSettings_DocumentUnhandledException;

private void ImportSettings_DocumentUnhandledException(object sender, DocumentUnhandledExceptionEventArgs e)
{
    if (e.Exception is InvalidGraphicOperandsCountException)
    {
        e.Handled = true;
    }
}