Googling “Flask file logger”, I found this: https://gist.github.com/ibeex/3257877
Adapting this to Dash would look something like:
import logging
from logging.handlers import RotatingFileHandler
import dash
app = dash.Dash()
if __name__ == '__main__':
handler = RotatingFileHandler('foo.log', maxBytes=10000, backupCount=1)
handler.setLevel(logging.INFO)
app.server.logger.addHandler(handler)
app.run_server()
I haven’t tested this, but I’d recommend searching for something along these lines. Be sure to let us know what you end up with!