Not able to access css/js from assets folder in dash integration with flask

external_scripts = [‘’]

dash_app = dash.Dash(__name__,server=flask_app, external_scripts = external_scripts, external_stylesheets=external_stylesheets, url_base_pathname=‘abc’)

this is a part of my code.
I am using dash app in flask app and I have made assets folder where my lies.
I am also using __name__ but not able to access css/js files from it.