Unable to decode JWT token: Error: Signature verification failed for input

The mistake I made was to implement this route:

  // DO NOT USE THIS, BAD CODE
    app.post('/installed', addon.authenticate(), async function(req: any, res: any) {
        console.log(req.body)
        //do something own after installation, nope this is not good!
        res.sendStatus(200);
    })

This does apparently break the first authentication between Jira and the add-on. I did not notice this break, because my dev add-on was already registered with Jira and the authentication was using and entry from a sqlLite file database that was saved before the breaking change. So I did not understand why it “suddenly” broke, because the mistake was made one month back.

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