I am following the below instructions to install superset. In this step "superset runserver -d" getting an error below. How do I fix this issue. Thanks
[DEPRECATED] As of Flask >=1.0.0, this command is no longer supported, please use flask run
instead, as documented in our CONTRIBUTING.md
[example]
flask run -p 8080 --with-threads --reload --debugger
# Install superset
pip install superset
# Create an admin user (you will be prompted to set a username, first and last name before setting a password)
fabmanager create-admin --app superset
# Initialize the database
superset db upgrade
# Load some data to play with
superset load_examples
# Create default roles and permissions
superset init
# To start a development web server on port 8088, use -p to bind to another port
superset runserver -d