title: Unable to produce tensorboard in Keras pre trained model
body: <p>I am building Pre trained inception model for image classification in keras
  i am trying to produce tensorboard but getting errors like "Unable to create directory:
  code :</p>
  
  <pre><code>from tensorflow.keras.callbacks import TensorBoard
  from time import time
  tensorboard = TensorBoard(log_dir="logs/{}".format(time()))
  history= model_inc.fit(trainX,trainY,epochs=9,batch_size=16,
                         validation_data=(testX,testY),
                         shuffle=True,verbose=1,
                         callbacks=[tensorboard])
  </code></pre>