sar command returns "End of system activity file unexpected".

Issue

• The sar command returns a message "End of system activity file unexpected" and fails.

# sar -f /var/log/sa/sa10 
Linux 3.10.0-1062.el7.x86_64 (server1) 04/10/2021 _x86_64_ (4 CPU)
End of system activity file unexpected

• The customer collects information with sadc by executing cron on their environment.

$ cat /etc/cron.d/sysstat
# Run system activity accounting tool every 10 minutes
* * * * * root /usr/lib64/sa/sa1 1 60