title: ImportError: cannot import name 'LayerNormalization' from 'tensorflow.python.keras.layers.normalization' , getting this error on colab?
body: <p>I am trying to build a Object Detection model using Tensorflow Object detection API &amp; I am doing this on Colab. But when I am importing Tensorflow I am getting this error,I think this is because of the compatibility issues between different versions.
  The thing the confuses me more is that, it was working fine previously and i also managed to do few projects,but today suddenly I am getting this issue.</p>
  <p>I am using the following versions
  python 3.7
  tensorflow-gpu 2.4.1</p>
  <p>Here's the error I am getting :</p>
  <pre><code>---------------------------------------------------------------------------
  ImportError                               Traceback (most recent call last)
  &lt;ipython-input-28-f83c6d50081b&gt; in &lt;module&gt;()
  ----&gt; 1 import tensorflow as tf
        2 print(tf.__version__)
  
  5 frames
  /usr/local/lib/python3.7/dist-packages/tensorflow/python/keras/layers/__init__.py in &lt;module&gt;()
      175 
      176 # Normalization layers.
  --&gt; 177 from tensorflow.python.keras.layers.normalization import LayerNormalization
      178 from tensorflow.python.keras.layers.normalization_v2 import SyncBatchNormalization
      179 
  
  ImportError: cannot import name 'LayerNormalization' from 'tensorflow.python.keras.layers.normalization' (/usr/local/lib/python3.7/dist-packages/tensorflow/python/keras/layers/normalization/__init__.py)
  
  ---------------------------------------------------------------------------
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  </code></pre>