fix(evaluator): Handle expection when input length is too long

[eggry]

What does this PR do?
Make sure the input length will not exceed the classification model length.
Fix #16.

Please check all applicable items before submitting:

• Did you read the guideline for contributing?
• Does this PR fix a typo or improve the docs (you can dismiss the other checks if that's the case)?
• Is this PR related to an GitHub issue, and added a link to it?
• Did you write any new necessary tests?
• Did all tests passed in your development environment, both for existing tests and new tests?
• Did you update the documentation with your changes?
• Did you run the pre-commit checks for the code quality?