sudo apt update unable to lock directory code example

Example 1: how to realse the lock in the linux in apt

sudo kill <process_id>

Example 2: E: Unable to acquire the dpkg frontend lock (/var/lib/dpkg/lock-frontend), are you root?

$ sudo dpkg --configure -a
dpkg: error: parsing file '/var/lib/dpkg/updates/0004' near line 0:
newline in field name '#padding'