Clamav recent update: "existing lock file /etc/passwd.lock with an invalid PID"

Hello all,

I tried to update Clamav on Centos 7 and I received the errors below.
Any idea why? Do I need to do anything more?

—>

Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
usermod: existing lock file /etc/passwd.lock with an invalid PID '765

usermod: cannot lock /etc/passwd; try again later.
Updating : clamav-filesystem-0.100.1-3.el7.noarch 1/16
Updating : clamav-lib-0.100.1-3.el7.x86_64 2/16
Updating : clamav-update-0.100.1-3.el7.x86_64 3/16
usermod: existing lock file /etc/passwd.lock with an invalid PID '765

usermod: cannot lock /etc/passwd; try again later.
Updating : clamd-0.100.1-3.el7.x86_64

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Thank you