Failed to discover OP endpoint URL

Using the recommended code

passport.use(new SteamStrategy({
    returnURL: 'http://mysite.com/auth/steam/return',
    realm: 'http://mysite.com/',
    apiKey: 'my key'
  },
etc.

app.use('/auth/steam',
  passport.authenticate('steam', { successRedirect: '/',
    failureRedirect: '/error' })
  );

app.use('/auth/steam/return',
  passport.authenticate('steam', {failureRedirect: '/404' }),
    function(req, res) {
      res.redirect('/');
    }
  );

Error: Failed to discover OP endpoint URL (message: No providers found for the given identifier)

Occasionally the site will progress past this stage however, resulting in the next error:

Failed to verify assertion (message: No OpenID provider was discovered for the asserted claimed identifier)

I tried the solution in #27 but I couldn’t get it to work. Has anyone gained any further understanding on this issue?

To add to this, this has been working in my app for 8 months or so, none of the code has been changed.

[donjo9]

Never mind, dug a bit deeper, Firebase dont allow external API calls on free trier, upgrading to a paid plan fixed the issue

[shardick]

I have this error only on 1 server of 3. Two servers work correctly, pointing directly the single server URL, fire the error. i would appreciate if someone can point me in the right direction.

Express, Nodejs and packages are the same, only Ubuntu version is different, the not working server is newer. NTP is on and synced, the time is correct.

Thanks