fix IllegalArgumentException in hop web, fixes #3508

plugins/tech/google/src/main/java/org/apache/hop/vfs/googledrive/ui/GoogleAuthorizationDialog.java

@@ -52,7 +52,6 @@ public class GoogleAuthorizationDialog extends Dialog {
   protected Display display;
 
   private static final int OPTIONS = SWT.APPLICATION_MODAL | SWT.DIALOG_TRIM;
-  private static final Image LOGO = GuiResource.getInstance().getImageHopUi();
   private VerificationCodeReceiver receiver;
 
   public GoogleAuthorizationDialog(Shell shell, VerificationCodeReceiver receiver) {
@@ -61,7 +60,7 @@ public GoogleAuthorizationDialog(Shell shell, VerificationCodeReceiver receiver)
   }
 
   public void open(String url) {
-    createDialog("Google Drive", url, OPTIONS, LOGO);
+    createDialog("Google Drive", url, OPTIONS, GuiResource.getInstance().getImageHopUi());
     if (receiver != null) {
       ((CustomLocalServerReceiver) receiver).setUrl(url);
     }

plugins/transforms/janino/src/main/java/org/apache/hop/pipeline/transforms/userdefinedjavaclass/UserDefinedJavaClassDialog.java

@@ -157,8 +157,7 @@ private enum TabAddActions {
 
   private UserDefinedJavaClassMeta input;
   private UserDefinedJavaClassCodeSnippets snippitsHelper;
-
-  private static final GuiResource guiResource = GuiResource.getInstance();
+  private final GuiResource guiResource = GuiResource.getInstance();
 
   private TreeItem itemInput;
   private TreeItem itemInfo;

plugins/transforms/javascript/src/main/java/org/apache/hop/pipeline/transforms/javascript/ScriptValuesDialog.java

@@ -168,7 +168,7 @@ public class ScriptValuesDialog extends BaseTransformDialog {
 
   private TreeItem itemoutput;
 
-  private static final GuiResource guiresource = GuiResource.getInstance();
+  private final GuiResource guiresource = GuiResource.getInstance();
 
   private IRowMeta rowPrevTransformFields;