Hi,
currently I am converting documents into PDF/a files. In some cases we receive an object reference error. The following shows this error.
The object reference was not set to an object instance.
at #=zBKlFZvyHx7FxSP3Q9_POqRQ3SOgflzSrzQ==.#=z5VupspQ=()
at #=zZVJNRc4jX8BRMc8OxIh6zkTnoVxwI10g62Mfr$lZfk3absvbZZcIBFQ=.#=zc2WgxQQ=
(#=zLp1QCJMCjlTckKpu7U$O4YRPrbrhyi5qaDbbPptzqbCb #=zx1gS_iLyaOl1,
#=zrDdklJFhB7bjk3SZNbiGpyEDwt1H9JoTaP4JZQY= #=zcjaeepo=)
at (Object , Object[] )
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=z6gL$9Br$JtW$6bPLHrFatarnb8Hekuro 70OI$Dc=(MethodBase #=zw0qwi1Y=, Object #=ziVvwtA4=, Object[] #=zC42lIgs=, Boolean #=zsHpbiOE=)
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=zN7pMLLVfYSeEjU3t5rYWluJM9N2q(MethodBase #=zw0qwi1Y=, Boolean #=ziVvwtA4=)
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=zWVhwPsME7yYWyl1C5RS6f34=(#=qTBeYVOJMDNNiO1$48h7F7U3BSLI664MYjQsgysXAwA4= #=zw0qwi1Y=)
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=zuex84HDu1dXIpeXTEUdMiAs=(#=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0= #=zw0qwi1Y=, #=qTBeYVOJMDNNiO1$48h7F7U3BSLI664MYjQsgysXAwA4= #=ziVvwtA4=)
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=zMshOjaKeJZen5Jcx_mHz2Y5jeH6z0NcwhA==()
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=zo6IOV$5Igv_8Vk5C$dfWCKU=(Boolean #=zw0qwi1Y=)
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=z1oLsyQJ0Q0GKKe5j1Ib7Q43$mQvB(Object #=zw0qwi1Y=)
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=zYxlCnMyCN2SknNhndw==()
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=zznGL9YwFQ4B9kS8r0d$hmb8SJpu3BKqQlg==(Object #=zw0qwi1Y=, UInt32 #=ziVvwtA4=)
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=zo6IOV$5Igv_8Vk5C$dfWCKU=(Boolean #=zw0qwi1Y=)
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=z0Za8YmFnmI33eslf9cjf5cyiL98vTFjd0g==()
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=zAzO3Nq_ITZMfirF6SlW9BiSJLkr1Bstakw==(Object[] #=zw0qwi1Y=, Type[] #=ziVvwtA4=, Type[] #=zC42lIgs=, Object[] #=zsHpbiOE=)
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=zjIH4BtjiWpr9Pi1MAxqvtEcF7Xnps35aLuE34ak=(Stream #=zw0qwi1Y=, String #=ziVvwtA4=, Object[] #=zC42lIgs=, Type[] #=zsHpbiOE=, Type[] #=z4V2kXC8=, Object[] #=zhcritWg=)
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=z4qGrRAIMj29v_xZi1Nl$GOj2OeJUYGpXqAmNqBHNI3r_(Stream #=zw0qwi1Y=, String #=ziVvwtA4=, Object[] #=zC42lIgs=)
at #=qIZsV0jdsikgNaaW3UjYdc0ZTEsYJftDJfnM6mwisCG0=.#=zwcTEKH6VKJGOQs9I1SYbu7j0Sjwa(Stream #=zw0qwi1Y=, String #=ziVvwtA4=, Object[] #=zC42lIgs=)
at #=zwKj7NZIHVS4dR_mJXQsRw6jLvP_1wvNvdw==.#=zc2WgxQQ=()
at #=zRMDfbZHK_wlhekNnFpqjrYOHqsIz_wxn0Q==.#=zc2WgxQQ=(Stream #=zY_lFexs=)
at #=z2V3s1OhqLwELpwyCTckAviWoVubQ.#=zc2WgxQQ=(Stream #=zY_lFexs=)
at Aspose.Pdf.Document.#=zxMYTEhincwT4(Stream #=z5sDS6dk=, SaveOptions #=zzg8jzGl1n$rn)
at Aspose.Pdf.Document.Save(Stream output)
This error occurs trying to convert the following files:
Research-and-Development-Priorities-for-American-Leadership-in-Wireless-Communications-Report-May-2019.pdf
Open-Knowledge-Network-Workshop-Report-2018.pdf
NITRD_TTS-SmartGrid_Workshop_2011.pdf
NITRD-Connecting-Securing-Communities-Federal-Guide-2018.pdf
national_ai_rd_strategic_plan.pdf
July2017QuarterlyUpdate.pdf
object_reference_error.zip (4.0 MB)
These are open source PDF files from https://catalog.data.gov/dataset
Our code:
var options = new PdfFormatConversionOptions(PdfFormat.PDF_A_2B);
options.ConvertSoftMaskAction = ConvertSoftMaskAction.ConvertToStencilMask;
options.ExcludeFontsStrategy = PdfFormatConversionOptions.RemoveFontsStrategy.SubsetFonts | PdfFormatConversionOptions.RemoveFontsStrategy.RemoveDuplicatedFonts;
options.ErrorAction = ConvertErrorAction.None;
options.OptimizeFileSize = true;
byte[] pdfDoc;
convertDoc.Flatten();
using (var memoryStream = new MemoryStream())
{
options.LogStream = memoryStream;
convertDoc.Validate(options);
// CheckErrors(memoryStream);
}
using (var memoryStream = new MemoryStream())
{
options.LogStream = memoryStream;
convertDoc.Convert(options);
// CheckErrors(memoryStream);
}
using (var strmOut = new MemoryStream())
{
convertDoc.Save(strmOut);
pdfDoc = strmOut.ToArray();
}
I would appreciate any help on the matter.