E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable)

When i run the command "sudo apt update" or "sudo apt upgrade" , it will give below error -

E: Could not get lock /var/lib/dpkg/lock-frontend - open (11: Resource temporarily unavailable) E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), is another process using it?

I will fix this problem following just step:

sudo killall apt apt-get

If above command is not working. Run in terminal: (Note that this can seriously break your system.)

sudo rm /var/lib/apt/lists/lock
sudo rm /var/cache/apt/archives/lock
sudo rm /var/lib/dpkg/lock*

Then reconfig the packages. Run the terminal again and past below command

sudo dpkg --configure -a

Finally run

sudo apt update

I hope, it will fix your problem.