fix: ignorar instancias que ya no existen

app/jobs/activity_pub/instance_fetch_job.rb

@@ -21,6 +21,16 @@ class ActivityPub
 
         instance.update(content: response.parsed_response.object)
 
+        break
+      rescue BRS::BaseError,
+             Errno::ECONNREFUSED,
+             HTTParty::Error,
+             JSON::JSONError,
+             Net::OpenTimeout,
+             OpenSSL::OpenSSLError,
+             SocketError,
+             Errno::ENETUNREACH => e
+        ExceptionNotifier.notify_exception(e, data: { instance: uri })
         break
       end
     end