Contrib module error

I’m using TensorFlow 1.15 on anaconda.
However “The TensorFlow contrib module will not be included in TensorFlow 2.0.” error occurs.
Why? I’m not using TensorFlow 2.0.

There any reason that it does that?

It’s just a warning message that informs you that the tf.contrib module won’t be included in the next version of TensorFlow (the first 2.0 release) and you should upgrade your code for making it work with the new version.
If you don’t plan to upgrade it, you can safely ignore that warning