Bot Framework Python SDK授权错误：需满足欧洲数据驻留要求

我遇到了与Stack Overflow相关问题相同的ErrorResponseException: Operation returned an invalid status code 'Unauthorized'错误，不过该错误出现在示例18：Bot-Authentication场景下。原线程的已采纳方案无法使用，因为我需要满足欧洲数据驻留要求。

我已逐步遵循Microsoft官方文档操作（Azure相关配置由同事完成，我无权限操作），并在.env文件中添加了微软文档中找到的相关变量，内容如下：

MicrosoftAppId = "YYY"
MicrosoftAppPassword = "YYY"
MicrosoftAppType = "MultiTenant"
MicrosoftAppTenantId = "YYY"
ConnectionName = "YYY"

BotOpenIdMetadata = "https://login.botframework.com/v1/.well-known/openidconfiguration"
CallerId = "urn:botframework:azure"
OAuthUrl = "https://europe.token.botframework.com/"
ToBotFromChannelOpenIdMetadataUrl = "https://login.botframework.com/v1/.well-known/openidconfiguration"
ToBotFromChannelTokenIssuer = "https://api.botframework.com"
ToBotFromEmulatorOpenIdMetadataUrl = "https://login.microsoftonline.com/botframework.com/v2.0/.well-known/openid-configuration"
ToChannelFromBotLoginUrl = "https://login.microsoftonline.com/{0}"
ToChannelFromBotOAuthScope = "https://api.botframework.com"
ValidateAuthority = true

但问题仍未解决，也找不到更多相关排查信息。我已在模拟器中启用“Bypass ngrok for local addresses”选项，且使用自有userId，已排除这两方面的问题。

内容的提问来源于stack exchange，提问作者xHaMe