Using IPnPContextFactory to create a context generating error.

[ajcaterino]

For some of our SPO sites we are getting the following exception when trying to create the context:

System.FormatException: One of the identified items was in an invalid format.
   at System.Text.Json.ThrowHelper.ThrowFormatException()
   at PnP.Core.Model.SharePoint.FieldTaxonomyValue.FromJson(JsonElement json)
   at PnP.Core.Services.JsonMappingHelper.ProcessSpecialRestFieldTypeAsync(TransientObject pnpObject, String propertyName, JsonElement json)
   at PnP.Core.Services.JsonMappingHelper.FromJsonRest(TransientObject pnpObject, EntityInfo entity, ApiResponse apiResponse, Func`2 fromJsonCasting)
   at PnP.Core.Services.JsonMappingHelper.FromJson(TransientObject pnpObject, EntityInfo entity, ApiResponse apiResponse, Func`2 fromJsonCasting)
   at PnP.Core.Model.BaseDataModel`1.ProcessResponseAsync(ApiResponse apiResponse, Expression`1[] expressions)
   at PnP.Core.Services.JsonMappingHelper.FromJsonRest(TransientObject pnpObject, EntityInfo entity, ApiResponse apiResponse, Func`2 fromJsonCasting)
   at PnP.Core.Services.JsonMappingHelper.FromJson(TransientObject pnpObject, EntityInfo entity, ApiResponse apiResponse, Func`2 fromJsonCasting)
   at PnP.Core.Model.BaseDataModel`1.ProcessResponseAsync(ApiResponse apiResponse, Expression`1[] expressions)
   at PnP.Core.Services.JsonMappingHelper.FromJsonRest(TransientObject pnpObject, EntityInfo entity, ApiResponse apiResponse, Func`2 fromJsonCasting)
   at PnP.Core.Services.JsonMappingHelper.FromJson(TransientObject pnpObject, EntityInfo entity, ApiResponse apiResponse, Func`2 fromJsonCasting)
   at PnP.Core.Services.JsonMappingHelper.MapJsonToModel(BatchRequest batchRequest)
   at PnP.Core.Services.BatchClient.ProcessSharePointRestInteractiveResponse(BatchRequest restRequest, HttpStatusCode statusCode, Dictionary`2 responseHeaders, Stream responseContent)
   at PnP.Core.Services.BatchClient.ExecuteSharePointRestInteractiveAsync(Batch batch)
   at PnP.Core.Services.BatchClient.ExecuteSharePointRestBatchAsync(Batch batch)
   at PnP.Core.Services.BatchClient.ExecuteBatch(Batch batch)
   at PnP.Core.Model.BaseDataModel`1.BaseRetrieveAsync(ApiCall apiOverride, Func`2 fromJsonCasting, Action`1 postMappingJson, Expression`1[] expressions)
   at PnP.Core.Model.DataModelLoadExtensions.Load[TModel](IDataModelLoad`1 dataModelLoad, Expression`1[] expressions)

This occurs within a subsite of a site collection. Within the same site collection, but a different subsite, I do not get the exception. We have compared the sites and have not found any differences with permissions or any other configuration. The site collections and subsites are created through code and all go through the same process.

Is there a way to enable logging within PnP Core to where I can see the response coming back from SPO?

[jansenbe]

@ajcaterino : I assume you're loading extra data when you're creating the context? You can change the loglevel (see https://pnp.github.io/pnpcore/using-the-sdk/basics-settings.html#settings-overview) to see more output. Alternatively use a tool like Fiddler to capture the traffic that goes over the wire