Currently evaluating Aspose.NET and I’m getting an error for our target runtime environment converting PDF to PDF/A using .NET 6 on Linux.
The conversion log does report some errors, however I’m not sure if those are really supposed to prevent the conversion. The error is a null reference exception which tells me there’s a bug.
Hope all required info has been provided. thanks in advanced.
Docker Image: mcr.microsoft.com/dotnet/aspnet:6.0-focal
Publish command: dotnet publish --os linux -o publish -f net6.0
Input File
Printed to PDF from MS Word.
**input.pdf (450.5 KB)
**
Code
Practically, same as what’s in Convert PDF to PDF/A formats|Aspose.PDF for .NET
using var inputPdfFileStream = File.OpenRead(inputPdfFilename);
var document = new Document(inputPdfFileStream);
document.Convert("convert.log", PdfFormat.PDF_A_1B, ConvertErrorAction.Delete);
document.Save(outputPdfFilename);
Notable Dependencies
<PackageReference Include="Aspose.Pdf.Drawing" Version="23.2.0" />
<PackageReference Include="Aspose.Drawing" Version="23.2.0" />
<PackageReference Include="SkiaSharp.NativeAssets.Linux.NoDependencies" Version="2.88.3" />
<PackageReference Include="Microsoft.Extensions.DependencyModel" Version="6.0.0" />
Error
Unhandled exception. System.NullReferenceException: Object reference not set to an instance of an object.
at #=zsIyWioK31eoifD4h0oodXWInWWa_.#=zrCMBcrA=(#=zPXg6mQVFOnGPCqr9NpHT7TlK9AG2 #=zHRtK9WqhS0SP)
at #=zXvNf4yKsayXKe_0KW9ON_2E=.#=zR3eyU18=(#=zPXg6mQVFOnGPCqr9NpHT7TlK9AG2 #=zHRtK9WqhS0SP)
at #=zOCd4xIp8_cLiH3soa_luoDs=.#=zR3eyU18=(#=zPXg6mQVFOnGPCqr9NpHT7TlK9AG2 #=zHRtK9WqhS0SP)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=z3NTotJCuzcFbEqXzptaUMc_SBc2A(Object #=zFgqaTDc=)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=ziYjxLNtJd8hDvkstXqGYJ7717enH(MethodBase #=zFgqaTDc=, Boolean #=zVSzD2c0=)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=z3LB2Q1TZsQdBqkB1MCigQ1frOyxb(#=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk= #=zFgqaTDc=, #=qT26t5vOMKTF2HnEDSG0dt3I8NN1ZCwUgb929e45X9Kw= #=zVSzD2c0=)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=zb1YrD8aZvfuGtQ9dbTr5RehoGbPx5WDi6ZnAvng1aFRD()
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=znNgxBVYeHIG4WYuAs$zvelk=(Boolean #=zFgqaTDc=)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=z3NTotJCuzcFbEqXzptaUMc_SBc2A(Object #=zFgqaTDc=)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=zB6CIFzqNBQKYLUtjPY36OXQYY$CXPNNDq2cPGG8=()
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=zxcANlsq3aflTMbLEbjhOOZXqe$jB(#=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk= #=zFgqaTDc=, #=qT26t5vOMKTF2HnEDSG0dt3I8NN1ZCwUgb929e45X9Kw= #=zVSzD2c0=)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=zb1YrD8aZvfuGtQ9dbTr5RehoGbPx5WDi6ZnAvng1aFRD()
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=znNgxBVYeHIG4WYuAs$zvelk=(Boolean #=zFgqaTDc=)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=z3NTotJCuzcFbEqXzptaUMc_SBc2A(Object #=zFgqaTDc=)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=zB6CIFzqNBQKYLUtjPY36OXQYY$CXPNNDq2cPGG8=()
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=zVhU7Ldw2U$4YLwa4lWGKR_A=(Object #=zFgqaTDc=, UInt32 #=zVSzD2c0=)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=znNgxBVYeHIG4WYuAs$zvelk=(Boolean #=zFgqaTDc=)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=znNgxBVYeHIG4WYuAs$zvelk=(Boolean #=zFgqaTDc=)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=zVzlDZ1TVaS$EganeJDaK3bPbYzNPfVhmsA==(Object[] #=zFgqaTDc=, Type[] #=zVSzD2c0=, Type[] #=zip_JpN8=, Object[] #=zHNsDfyY=)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=zhbn$lUGzNdOHnbIIiK2GWNXou0sap5uCEQpCcY1z_K9i(Stream #=zFgqaTDc=, String #=zVSzD2c0=, Object[] #=zip_JpN8=)
at #=qRORQe7kwgNyo8AOmwnclh4z$TIYnPZrR5iEGYPwNPPk=.#=zCcJBgRLXEFS4uMhrK8xLiumYqeyF(Stream #=zFgqaTDc=, String #=zVSzD2c0=, Object[] #=zip_JpN8=)
at Aspose.Pdf.Document.#=zHSU7TJ1r2p51(Stream #=z4RwsdAs=, SaveOptions #=zgCO5VhJBUdNb)
at Aspose.Pdf.Document.#=zDrdlOuY__GWo(String #=zUbtl7rocKtHR)
at Aspose.Pdf.Document.Save(String outputFileName)
Logs
<Compliance Name="Log" Operation="Validation" Target="PDF/A-1B">
<Version>1.0</Version>
<Copyright>Copyright (c) 2001-2023 Aspose Pty Ltd. All Rights Reserved.</Copyright>
<Date>03/02/2023 11:29:35</Date>
<File Version="1.7" Name="" Pages="1">
<Security />
<Catalog />
<Header />
<Annotations />
<Fonts>
<Problem Severity="Error" Clause="6.3.6" ObjectID="19" Page="1" Convertable="True">Width information for glyphs is inconsistent in embedded font 'CIDFont+F2'</Problem>
<Problem Severity="Error" Clause="6.3.6" ObjectID="35" Page="1" Convertable="True">Width information for glyphs is inconsistent in embedded font 'CIDFont+F4'</Problem>
</Fonts>
<trailer>
<Problem Severity="Error" Clause="6.1.3" Convertable="True">The trailer dictionary does not contain 'ID'</Problem>
</trailer>
<Metadata>
<Problem Severity="Error" Clause="6.7.11" Convertable="True">Required property 'pdfaid:part' for schema 'pdfaid' missing</Problem>
<Problem Severity="Error" Clause="6.7.11" Convertable="True">Required property 'pdfaid:conformance' for schema 'pdfaid' missing</Problem>
</Metadata>
<objects />
<xObjects />
<actions />
</File>
</Compliance>