errors in web chat need more info in order to debug jsonwebtoken

An example is lacking about the configuration of a jsonwebtoken service and parameters therein, e.g. about key formatting: PEM, PPK, newline removal, "----- BEGIN SSH KEY -----" header removal or not, etc. This is not necessarily trivial, for example using fastify the defaults need to be overridden:
```
fastify.register(require('fastify-jwt'), {
secret: {
private: process.env.MY_PRIVATEKEY,
public: process.env.MY_PUBLICKEY 
},
sign: { 
algorithm: 'RS256',
expiresIn: 10000
}
})
```
with keys encoded in the .env file in a oneliner form: MY_PUBLICKEY=$'-----BEGIN PUBLIC KEY-----\nMIIBI...
I keep getting A request for a new identity token was made using the identityTokenExpired event but no valid token was returned by a subscriber. error, without any further information. My token seems to correctly encode, it decodes back as:
```
{
sub: 'anonymous_IBMuid-f8776d3e-09ab-42aa-acc1-302f5b7be219',
iss: 'mylittleproject.glitch.me',  
iat: 1622022045,
exp: 1622032045
}
```
With an error message like above I cannot debug further.
I do not see why in the web chat security example event.identityToken = 'YOUR NEW JWT' is used, while a method instance.updateIdentityToken(newtoken); exists.

All help clearing this out is appreciated!

ibm-cloud-docs / assistant