pnpframework: Azure Functions: [A]PnPManifest cannot be cast to [B]PnPManifest

I load my PnP Template from a .pnp file, and this works without a problem when executing locally. If I deploy my Azure Function, I get the following error:

[Error] Error Message: [A]PnP.Framework.Provisioning.Connectors.OpenXML.Model.PnPManifest cannot be cast to [B]PnP.Framework.Provisioning.Connectors.OpenXML.Model.PnPManifest. Type A originates from 'PnP.Framework, Version=0.1.109.0, Culture=neutral, PublicKeyToken=null' in the context 'Default' at location 'C:\home\site\wwwroot\bin\PnP.Framework.dll'. Type B originates from 'PnP.Framework, Version=0.1.109.0, Culture=neutral, PublicKeyToken=null' in the context 'Default' at location 'C:\home\site\wwwroot\bin\PnP.Framework.dll'.
[Error] Error while processing dossier: [A]PnP.Framework.Provisioning.Connectors.OpenXML.Model.PnPManifest cannot be cast to [B]PnP.Framework.Provisioning.Connectors.OpenXML.Model.PnPManifest. Type A originates from 'PnP.Framework, Version=0.1.109.0, Culture=neutral, PublicKeyToken=null' in the context 'Default' at location 'C:\home\site\wwwroot\bin\PnP.Framework.dll'. Type B originates from 'PnP.Framework, Version=0.1.109.0, Culture=neutral, PublicKeyToken=null' in the context 'Default' at location 'C:\home\site\wwwroot\bin\PnP.Framework.dll'.
at PnP.Framework.Provisioning.Connectors.OpenXML.PnPPackage.GetXamlSerializedPackagePartValue[T](PackagePart part)
at PnP.Framework.Provisioning.Connectors.OpenXML.PnPPackage.get_Manifest()
at PnP.Framework.Provisioning.Connectors.OpenXML.PnPPackageExtensions.LoadPnPPackage(PnPPackage package)
at PnP.Framework.Provisioning.Connectors.OpenXML.PnPPackageExtensions.UnpackTemplate(MemoryStream stream)
at PnP.Framework.Provisioning.Connectors.OpenXMLConnector..ctor(String packageFileName, FileConnectorBase persistenceConnector, String author, X509Certificate2 signingCertificate, String templateFileName)
at ...

If I switch my code to run from .xml, it works in Azure Functions. Problem seems to happen in this method, but I don’t see why. There are two casts happening… https://github.com/pnp/pnpframework/blob/6b7b45166cf4fd17412fe3dff9ef14a6a1def35d/src/lib/PnP.Framework/Provisioning/Connectors/OpenXML/PnPPackage.cs#L315-L350

About this issue

Original URL
State: open
Created 3 years ago
Comments: 27 (23 by maintainers)

Most upvoted comments

@YannickRe : been way too busy…so did not have time for this. Feel free to keep bumping it

jansenbe on May 26, 2021

Hi, you might try to change your csproj of the Azure Function and add this Line “<_FunctionsSkipCleanOutput>true</_FunctionsSkipCleanOutput>”

in here like this:

  <PropertyGroup>
    <TargetFramework>netcoreapp3.1</TargetFramework>
    <AzureFunctionsVersion>v3</AzureFunctionsVersion>
    <_FunctionsSkipCleanOutput>true</_FunctionsSkipCleanOutput>
  </PropertyGroup>

This usually helps to resolve conflicts with classes which the Azure Function Framework uses as well.

czullu on Mar 2, 2021

Don’t feel like we should let this close automatically… 🙂

YannickRe on Feb 24, 2021

@jansenbe I have a repro on https://github.com/YannickRe/PnPFrameworkIssue91

Adjust FunctionApp/Function1.cs, and provide values for siteUrl, userName and password
Deploy the Function App to Azure, on a v3 Function App Consumption Plan
Trigger the function from the Azure Portal while watching the real time log stream

It might require multiple executions in a short timespan to get to the error message. As you can see in the screenshot my first execution worked but the second failed.

YannickRe on Jan 24, 2021

No rush…

jansenbe on Jan 21, 2021

I’ll try and get a repro Azure Function v3 over the weekend! Biggest issue is that this only occurs in Azure, not when running the function locally. Otherwise I’d be able to easier debug.

YannickRe on Jan 14, 2021