SyntaxError: Missing parentheses in call to 'print'. Did you mean print('... building the model')?

This error message indicates that there is a syntax error in your code, specifically in a `print` statement. The error message suggests that you may have forgotten to use parentheses around the argument or message that you're trying to print.

For example, instead of writing:

print "Hello, world!"

You should write:

print("Hello, world!")

Make sure to use parentheses around the message you're trying to print, and the error message should go away.