Certificate errors are being seen
Not sure if this is related to the Lets Encrypt change a few months ago?
2021-11-17T09:43:59.324676+00:00 heroku[router]: at=info method=GET path="/callback?code=&iss=https://indieauth.jvt.me&state=
b5a89a" host=tokens-pls.herokuapp.com request_id=d03830b2-c84c-4f96-b103-09de5ec3a9a2 fwd="82.31.144.236" dyno=web.1 connect=0ms service=277ms status=500 bytes=326 protocol=https
2021-11-17T09:43:59.325496+00:00 app[web.1]: 2021-11-17 09:43:59 - OpenSSL::SSL::SSLError - SSL_connect returned=1 errno=0 state=error: certificate verify failed (certificate has expired):
2021-11-17T09:43:59.325520+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient/ssl_socket.rb:103:in `connect'
2021-11-17T09:43:59.325521+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient/ssl_socket.rb:103:in `ssl_connect'
2021-11-17T09:43:59.325521+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient/ssl_socket.rb:41:in `initialize'
2021-11-17T09:43:59.325522+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient/ssl_socket.rb:26:in `new'
2021-11-17T09:43:59.325522+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient/ssl_socket.rb:26:in `create_socket'
2021-11-17T09:43:59.325523+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient/session.rb:752:in `block in connect'
2021-11-17T09:43:59.325523+00:00 app[web.1]: /app/vendor/ruby-2.6.6/lib/ruby/2.6.0/timeout.rb:93:in `block in timeout'
2021-11-17T09:43:59.325524+00:00 app[web.1]: /app/vendor/ruby-2.6.6/lib/ruby/2.6.0/timeout.rb:103:in `timeout'
2021-11-17T09:43:59.325524+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient/session.rb:748:in `connect'
2021-11-17T09:43:59.325524+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient/session.rb:511:in `query'
2021-11-17T09:43:59.325525+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient/session.rb:177:in `query'
2021-11-17T09:43:59.325525+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient.rb:1242:in `do_get_block' 2021-11-17T09:43:59.325525+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient.rb:1019:in `block in do_request'
2021-11-17T09:43:59.325526+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient.rb:1133:in `protect_keep_alive_disconnected'
2021-11-17T09:43:59.325526+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient.rb:1014:in `do_request'
2021-11-17T09:43:59.325527+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient.rb:856:in `request'
2021-11-17T09:43:59.325532+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/httpclient-2.8.3/lib/httpclient.rb:765:in `post'
2021-11-17T09:43:59.325533+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/rack-oauth2-1.16.0/lib/rack/oauth2/client.rb:126:in `block in access_token!'
2021-11-17T09:43:59.325533+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/rack-oauth2-1.16.0/lib/rack/oauth2/client.rb:146:in `handle_response'
2021-11-17T09:43:59.325533+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/rack-oauth2-1.16.0/lib/rack/oauth2/client.rb:125:in `access_token!'
2021-11-17T09:43:59.325534+00:00 app[web.1]: /app/app.rb:70:in `block in <top (required)>'
2021-11-17T09:43:59.325535+00:00 app[web.1]: /app/vendor/bundle/ruby/2.6.0/gems/sinatra-2.1.0/lib/sinatra/base.rb:1675:in `call'