Messenger failing to connect 12.9.2

I am getting an error from a bot which I exported from 12.9.1 to 12.9.2

05/20/2020 13:16:03.506 BotService Cannot mount bot "facebook" [Error, while mounting bot in module channel-messenger: Error: Request failed with status code 400]
STACK TRACE
Error: while mounting bot in module channel-messenger: Error: Request failed with status code 400
    at ModuleLoader.<anonymous> (C:\snapshot\build-windows\out\bp\core\module-loader.js:0:0)
    at Generator.throw (<anonymous>)
    at rejected (C:\snapshot\build-windows\out\bp\core\module-loader.js:0:0)
    at tryCatcher (C:\Chatbot_V2_-01\Application\modules\.cache\module__0aadd937e440f2974666a7c18634c7abb793ad3a5251fc172bd23dcc97136437\node_production_modules\bluebird\js\release\util.js:16:23)
    at Promise._settlePromiseFromHandler (C:\Chatbot_V2_-01\Application\modules\.cache\module__0aadd937e440f2974666a7c18634c7abb793ad3a5251fc172bd23dcc97136437\node_production_modules\bluebird\js\release\promise.js:547:31)
    at Promise._settlePromise (C:\Chatbot_V2_-01\Application\modules\.cache\module__0aadd937e440f2974666a7c18634c7abb793ad3a5251fc172bd23dcc97136437\node_production_modules\bluebird\js\release\promise.js:604:18)
    at Promise._settlePromise0 (C:\Chatbot_V2_-01\Application\modules\.cache\module__0aadd937e440f2974666a7c18634c7abb793ad3a5251fc172bd23dcc97136437\node_production_modules\bluebird\js\release\promise.js:649:10)
    at Promise._settlePromises (C:\Chatbot_V2_-01\Application\modules\.cache\module__0aadd937e440f2974666a7c18634c7abb793ad3a5251fc172bd23dcc97136437\node_production_modules\bluebird\js\release\promise.js:725:18)
    at _drainQueueStep (C:\Chatbot_V2_-01\Application\modules\.cache\module__0aadd937e440f2974666a7c18634c7abb793ad3a5251fc172bd23dcc97136437\node_production_modules\bluebird\js\release\async.js:93:12)
    at _drainQueue (C:\Chatbot_V2_-01\Application\modules\.cache\module__0aadd937e440f2974666a7c18634c7abb793ad3a5251fc172bd23dcc97136437\node_production_modules\bluebird\js\release\async.js:86:9)
    at Async._drainQueues (C:\Chatbot_V2_-01\Application\modules\.cache\module__0aadd937e440f2974666a7c18634c7abb793ad3a5251fc172bd23dcc97136437\node_production_modules\bluebird\js\release\async.js:102:5)
    at Immediate.Async.drainQueues [as _onImmediate] (C:\Chatbot_V2_-01\Application\modules\.cache\module__0aadd937e440f2974666a7c18634c7abb793ad3a5251fc172bd23dcc97136437\node_production_modules\bluebird\js\release\async.js:15:14)
    at runCallback (timers.js:696:18)
    at tryOnImmediate (timers.js:667:5)
    at processImmediate (timers.js:649:5)
    at process.topLevelDomainCallback (domain.js:121:23)

Are your FB app “In development” status

The application is in development and the webhook is registered fine (see below). In fact all I changed is the Botpress version.

In data/global/config/channel-messenger.json

In data/bots/facebook/config/channel-messenger.json

I have the same problem with you when trying to update the latest botpress version :frowning: . v.12.9.3