handle http request exceptionfor ark

hyrax/app/services/ark_service.rb

@@ -255,14 +255,14 @@ class ArkService
   end
 
   def _do_request(request)
+    success = false
     base_uri = URI(@base_url)
     request_options = { use_ssl: base_uri.scheme == "https" }
     request['Cookie'] = HTTP::Cookie.cookie_value(@jar.cookies(base_uri)) if @jar.cookies(base_uri)
-    response = Net::HTTP.start(base_uri.hostname, base_uri.port, request_options) do |http|
-      http.request(request)
-    end
-    success = false
     begin
+      response = Net::HTTP.start(base_uri.hostname, base_uri.port, request_options) do |http|
+        http.request(request)
+      end
       response_body = JSON.parse(response.body)
     rescue
       response_body = response.body