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Ubuntu 20.04.2 LTS displays “There is 1 zombie process” upon login

=> There is 1 zombie process.
  • To Check the zombie process run below command
ps axo stat,ppid,pid,comm | grep -w defunct
  • and Then kill the parent process
sudo kill -9 <parent_process_number>

👉 For more details read below tutorial on this topic:

Click Here