Update share_btn.py

share_btn.py

@@ -36,7 +36,7 @@ share_js = """async () => {
         const fileName = 'image-cleaner-${{imgId}}.png';
         return new File([blob], fileName, { type: 'image/png' });
     }
-    const gradioEl = document.querySelector('body > gradio-app').shadowRoot;
+    var gradioEl = document.querySelector('body > gradio-app').shadowRoot;
     if (!gradioEl) {
         gradioEl = document.querySelector('body > gradio-app');
     }