Not able to update Logo

I am new to openedx and recently installed in Ubuntu 20.04.
we are using an indigo theme, but when we tried to update the logo and did some of the
the process indicated in this forum the logo still not updating.

even after performing,

tutor local stop
tutor local start

and even

tutor local stop
tutor images build openedx
tutor local start

need your help on how to resolve the issue.

also tried to create a separate theme directory and put the logo. Update the site theme in admin but still a no-go.

thank you in advance