问无法在tensorflow.js中加载python训练的模型

EN

console.log ("hello");

let model;
(async function () {
    model = await tf.loadModel("http://keras_model/model.json");
    $(".progress-bar").hide();
    console.log("it works");
})();

main
  -dataset  (contains images for training the model) 
  -training_scripts (python scripts to train the model)
  -user_interface
     --server.js (server made using node.js(and express))
     --static (this folder contains the trained keras model)
         --index.html (html file to be served)
         --predict.js 
         --keras_model(this folder contains the model.json file)