I have a helm setup of erpnext in k8s, i need to install a new module now

I used

bench get-app education
bench install-app education

post this i did the migrate
which said 100% successful

and i was restarting the pod when i realised i dont have systemctl or i dont know if i had su on it.

I cant seem to reset this, and get my application working.

Is this the right way to install a new app when i have helm?

is there a video resource of a step by step guide on how to set things up correctly?