Show error message if in debug mode

lib/Tracking_EasyPost.lib.php

@@ -26,6 +26,10 @@ class Tracking_EasyPost {
                 ));
             }
         } catch (Exception $ex) {
+            if (env("debugmode", false)) {
+                echo $ex->getMessage();
+                echo $ex->getTraceAsString();
+            }
             throw new TrackingException("There was a server problem. This code cannot be tracked right now.");
         }