setting up jaeger UI locally

[AdityaRaimec22]

when I run this command yarn install --frozen-lockfile I gets
yarn install --frozen-lockfile
Usage: yarn [options] yarn: error: no such option: --frozen-lockfile

and it is written If you don't have it running locally, then tunnel to the correct host and port:

ssh -fN -L 16686:$BACKEND_HOST:$BACKEND_PORT $BACKEND_HOST

but I am unable to figure out the BACKEND_PORT and BACKEND_HOST

[psk001]

Did you go to jaeger-ui directory after cloning the repo?
For second part of your problem.
Set up jaeger all in one docker first. Here

This will expose required ports such as 16686.

[yurishkuro]

Usage: yarn [options] yarn: error: no such option: --frozen-lockfile

make sure you run the latest version of yarn