WireMock Setting 'SaveMappingToFile' raising cast object to type error

[jmontalto01]

Describe the bug
I am using wiremock docker compose example with ProxyAndRecordSettings (command "--ProxyURL" ) and setting "--SaveMappingToFile", "true". It raises the following error when browsing to http://localhost:9091/__admin/mappings

{"Status":"Unable to cast object of type 'WireMock.ResponseProviders.DynamicResponseProvider' to type 'WireMock.ResponseBuilders.Response'."}

Expected behavior:
Load mapping files

Test to reproduce
Docker Compose file:

version: "3.8"

services:
wiremock:
image: sheyenrath/wiremock.net
ports:

• "9091:80"
  volumes:
• ./wiremock/mappings:/app/__admin/mappings
  command: ["dotnet", "wiremock-net.dll", "--Urls", "http://*:80", "--ReadStaticMappings", "true", "--AllowPartialMapping", "true", "--WireMockLogger", "WireMockConsoleLogger", "--ProxyURL", "https://api.hub24.com.au/epi/epiportfolio.asmx", "--SaveMapping", "true", "--SaveMappingToFile", "true"]

Other related info
I have raised the same issue to WireMock.Net for reference.