Update app.py

app.py

@@ -147,8 +147,7 @@ def ui():
                            inputs=[png_items] + paras,
                            outputs=paras)
             png2main.click(fn=None,
-                           _js="(x) => { if (x !== null) document.getElementById('client_ui_main-button').click(); "
-                              "return null; }",
+                           _js="(x) => { if (x !== null) document.getElementById('client_ui_main-button').click(); return null; }",
                            inputs=image)
             image.change(read_info_from_image, inputs=image, outputs=[info, png_items])
     return website