upgrade to nswag 14 cause errors

[barnuri-cp]

after upgrading NSwag from 13 to 14 started to get error that cant generate the doc

 System.InvalidOperationException: Could not find the JSON path of a referenced schema: Manually referenced schemas must be added to the 'Definitions' of a parent schema.
   at NJsonSchema.JsonPathUtilities.GetJsonPaths(Object rootObject, IEnumerable`1 searchedObjects, IContractResolver contractResolver)
   at NJsonSchema.JsonSchemaReferenceUtilities.UpdateSchemaReferencePaths(Object rootObject, Boolean removeExternalReferences, IContractResolver contractResolver)
   at NJsonSchema.Infrastructure.JsonSchemaSerialization.ToJson(Object obj, SchemaType schemaType, IContractResolver contractResolver, Formatting formatting)
   at NSwag.OpenApiDocument.ToJson(SchemaType schemaType, Formatting formatting)
   at NSwag.OpenApiDocument.ToJson(SchemaType schemaType)
   at NSwag.OpenApiDocument.ToJson()
   at NSwag.AspNetCore.Middlewares.OpenApiDocumentMiddleware.GetDocumentAsync(HttpContext context)
   at NSwag.AspNetCore.Middlewares.OpenApiDocumentMiddleware.Invoke(HttpContext context)