שגיאת הגדרת Discourse

New error when I ran ./launcher logs app again.
Error

PEM_read_bio_X509_AUX() failed (SSL: error:0909006C:PEM rout                                    ines:get_name:no start line:Expecting: TRUSTED CERTIFICATE)

Any idea what this one means?

Edit:
I think is is actually just the rate limit. I have followed the steps above on connecting another domain to my website to use Discourse on, and I still seem to get the error, ERR_CONNECTION_REFUSED. I followed all the steps correctly on the documentation you sent me. Are there any other steps I need to take after configuring the app.yml file?