**我正在嘗試保存模型以便在 Web 應用程序中使用它，但出現此錯誤 **X = []sentences = list(review_df['text'])for sen in sentences:X.append(clean_text(sen))y = review_df['Label']y = np.array(list(map(lambda x: 1 if x=="fake" else 0, y)))#使用遞歸神經網絡 (LSTM) 進行文本分類from keras.layers.recurrent import LSTMmodel = Sequential()embedding_layer = Embedding(vocab_size, 100, weights=[embedding_matrix], input_length=maxlen , trainable=False)model.add(embedding_layer)model.add(LSTM(128))model.add(Dense(1, activation='sigmoid'))model.compile(optimizer='adam', loss='binary_crossentropy', metrics=['acc'])print(model.summary())#訓練模型history = model.fit(X_train, y_train, batch_size=128, epochs=6, verbose=1, validation_split=0.2)score = model.evaluate(X_test, y_test, verbose=1) #打印模型結果print("Test Score:", score[0])print("Test Accuracy:", score[1])#對單個實例進行預測instance = X[57]print(instance)instance = tokenizer.texts_to_sequences(instance)flat_list = []for sublist in instance:for item in sublist:flat_list.append(item)flat_list = [flat_list]instance = pad_sequences(flat_list, padding='post', maxlen=maxlen)model.predict(instance)#保存模型import picklewith open('model.pkl', 'wb') as f:pickle.dump(model, f)當我嘗試保存模型時出現此錯誤： TypeError: can't pickle _thread.RLock objects 有沒有解決此錯誤的想法