Do not calculate hash when asset not exist.
Do not calculate hash when asset not exist.

1045347128/Flask-Boost,1045347128/Flask-Boost,hustlzp/Flask-Boost,1045347128/Flask-Boost,hustlzp/Flask-Boost,hustlzp/Flask-Boost,1045347128/Flask-Boost,hustlzp/Flask-Boost