Make errors more meaningful

Author: wchen-r7

modules/exploits/unix/webapp/wp_ninja_forms_unauthenticated_file_upload.rb

@@ -69,7 +69,11 @@ def enable_v3_functionality
     )
 
     unless res && res.code == 200
-      fail_with(Failure::Unreachable, 'Failed to enable the vulnerable V3 functionality')
+      if res
+        fail_with(Failure::Unreachable, "Failed to enable the vulnerable V3 functionality. Server returned: #{res.code}, should be 200.")
+      else
+        fail_with(Failure::Unreachable, 'Connection timed out.')
+      end
     end
 
     vprint_good 'Enabled V3 functionality'
@@ -85,6 +89,8 @@ def disable_v3_functionality
 
     if res && res.code == 200
       vprint_good 'Disabled V3 functionality'
+    elsif !res
+      print_error('Connection timed out while disabling V3 functionality')
     else
       print_error 'Failed to disable the vulnerable V3 functionality'
     end
@@ -167,4 +173,4 @@ def exploit
     # Once the payload has been executed, we can disable the preview functionality again.
     disable_v3_functionality
   end
-end
+end