Error: Couldn't validate the request signature.

[atomicfruitcake]

With no changes to our codebase, we are now seeing this error when we attempt to send messages. The bot webhook successfully validates with Facebook. Could this is an issue with the facebook api? We are using version 2.9

data:    app.js:19176 - Error: Couldn't validate the request signature.
data:    app.js:19176 -     at BootBot._verifyRequestSignature (/ahs/bot/node_modules/bootbot/lib/BootBot.js:455:15)
data:    app.js:19176 -     at /ahs/bot/node_modules/body-parser/lib/read.js:100:9
data:    app.js:19176 -     at invokeCallback (/ahs/bot/node_modules/raw-body/index.js:262:16)
data:    app.js:19176 -     at done (/ahs/bot/node_modules/raw-body/index.js:251:7)
data:    app.js:19176 -     at IncomingMessage.onEnd (/ahs/bot/node_modules/raw-body/index.js:307:7)
data:    app.js:19176 -     at emitNone (events.js:105:13)
data:    app.js:19176 -     at IncomingMessage.emit (events.js:207:7)
data:    app.js:19176 -     at endReadableNT (_stream_readable.js:1047:12)

[sotirelisc]

Having the same issue as of today!

[Juan-Pieterse]

Guys. I got the same issue. After about 2 days of scratching my head my genius boss pointed out that I got the appSecret variable wrong. DOUBLE CHECK YOUR APP SECRET in the code. Sorted it out nicely!

[mraaroncruz]

I'm going to close this as OP hasn't responded and it looks like we have a solution.
I will also add an issue for adding a troubleshooting section from @Juan-Pieterse's comment.