Unable to cast object of type 'Microsoft.SharePoint.Client.Field' to type 'Microsoft.SharePoint.Client.Taxonomy.TaxonomyField'.

[josipgrgic]

Hello PnP team,

I am facing this problem when extracting a template from an existing site. The stack trace is below:

"stackTrace": " at PnP.Framework.Provisioning.ObjectHandlers.ObjectListInstance.ExtractFields(Web web, List siteList, List1 contentTypeFields, ListInstance list, List1 lists, ProvisioningTemplateCreationInformation creationInfo, ProvisioningTemplate template)\r\n at PnP.Framework.Provisioning.ObjectHandlers.ObjectListInstance.ExtractObjects(Web web, ProvisioningTemplate template, ProvisioningTemplateCreationInformation creationInfo)\r\n at PnP.Framework.Provisioning.ObjectHandlers.SiteToTemplateConversion.GetRemoteTemplate(Web web, ProvisioningTemplateCreationInformation creationInfo)\r\n at Microsoft.SharePoint.Client.WebExtensions.GetProvisioningTemplate(Web web, ProvisioningTemplateCreationInformation creationInfo)\r\n at PnP.Framework.Provisioning.ObjectHandlers.ObjectHierarchySequenceSites.ExtractObjects(Tenant tenant, ProvisioningHierarchy hierarchy, ExtractConfiguration configuration)\r\n at PnP.Framework.Provisioning.ObjectHandlers.SiteToTemplateConversion.GetTenantTemplate(Tenant tenant, ExtractConfiguration configuration)\r\n at Microsoft.SharePoint.Client.TenantExtensions.GetTenantTemplate(Tenant tenant, ExtractConfiguration configuration)\r\n

The exact line that fails is:

An identical issue was referenced in #830 and I believe the same fix can be applied here as well.

change
var taxField = (TaxonomyField)field;

to
var taxField = web.Context.CastTo<TaxonomyField>(field);

(it fixed my problems at least)

Best regards,
Josip