print stack trace if function could not be loaded

src/main/java/de/uni_hamburg/corpora/gui/CorpusThread.java

@@ -86,7 +86,7 @@ class CorpusThread extends Thread {
                         catch (IllegalArgumentException | NoSuchMethodException | InstantiationException | InvocationTargetException | IllegalAccessException e) {
                             logger.severe(String.format("Error creating %s", canonical));
                             report.addWarning("CorpusWebServices", "Test " + function + " cannot be created");
-//                            e.printStackTrace();
+                            e.printStackTrace();
                         }
                     }
                 }