Dialog.show() how to prevent: "Can not perform this action after onSaveInstanceState"?

I have a DialogFragment in my App which often makes the application crash cause of:

Fatal Exception: java.lang.IllegalStateException
Can not perform this action after onSaveInstanceState
it.dialogs.LoadingDialog.show (LoadingDialog.java:39)
it.TablesActivity.showLoading (TablesActivity.java:135)
it.TablesActivity.getTable (TablesActivity.java:148)
it.TablesActivity.onClickTable (TablesActivity.java:415)
it.fragments.TablesFragment$4.onResponse 

(TablesFragment.java:300)

My DialogFragment looks like this:

public class LoadingDialog extends DialogFragment {

    public static String TAG = "LoadingDialog";

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        return inflater.inflate(R.layout.alert_loading, container);
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);

        getDialog().setCancelable(false);
        getDialog().setCanceledOnTouchOutside(false);
        getDialog().getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
    }

    @Override
    public void show(@NonNull FragmentManager manager, @Nullable String tag) {
        if (manager.findFragmentByTag(LoadingDialog.TAG) == null) {
            super.show(manager, tag); // line 39
        }
    }
}

And in my Activity the showLoading method is the following:

public void showLoading(boolean show) {
    Fragment fragment = getSupportFragmentManager().findFragmentByTag(LoadingDialog.TAG);
    if (fragment instanceof LoadingDialog) {
        ((LoadingDialog) fragment).dismissAllowingStateLoss();
    } else if (show) {
        new LoadingDialog().show(getSupportFragmentManager(), LoadingDialog.TAG);
    }
}

How can I prevent that type of crash in my application?