iSpindle and Fermentrack

I got the following error:
kurt@kurt-ThinkPad-X240:~$ sudo apt-get install esptool
[sudo] password for kurt:
Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package esptool

I’m running Ubuntu 18.04

Nevermind guys. The Ubuntu laptop just died. I’ll be going back to my windows systems to troubleshoot there again. Keep you posted.