No module named 'tensorflow'

This error message indicates that the TensorFlow library is either not installed on your system or is not accessible to the Python interpreter you are using.

To resolve this error, you can try the following steps:

1. Install TensorFlow using pip: Open a terminal/command prompt and run the command `pip install tensorflow`. Make sure you have the latest version of pip installed before running this command.

2. Check your Python environment: Ensure that you are using the correct version of Python and that it is installed in the correct location. You can check this by running the command `python --version` in the terminal/command prompt.

3. Check your PATH environment variable: Make sure that the directory containing the TensorFlow library is included in your system's PATH environment variable. You can check this by running the command `echo $PATH` in the terminal/command prompt.

4. Check your PYTHONPATH environment variable: Make sure that the directory containing the TensorFlow library is included in your Python's PYTHONPATH environment variable. You can check this by running the command `echo $PYTHONPATH` in the terminal/command prompt.

5. If steps 1-4 do not work, try creating a new virtual environment and installing TensorFlow in that environment. This will ensure that the TensorFlow library is isolated from other libraries and dependencies.

If none of these steps work, you may need to seek further help from the TensorFlow community or your system administrator.