All the system bars are gone

Hay guys
My system’s all the bars are gone top bar where you can find applications the lower bar which is also for applications is gone
I used full-upgrade and some of the apps were showing error icons instead of there own icons then i restarted the laptop and now all those bars are gone some apps were also uninstalled i can access just file manager and run things from there even windows buttion doesn’t open lower apps to choose from.
Please can anyone help

This will reset the panels:


Thank you but when the screen looked the unlocking dialog didn’t show up so i restarted the laptop and i didn’t start
And now I am installing os again.
But thanks for replying

ok and is using apt-get update
or apt update ok should i use them?

You able to use

    apt update 

But best way is


This script written by palinuro and all required commands already set on it.

You can able to see it

  nano /usr/bin/parrot-upgrade
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