[arch-general] Start a daemon, show a syntax error

[大熊]

No matter I manual start any a daemon, I always see a error shown on
console:

/etc/rc.d/functions: line 506: syntax error near unexpected token `('
/etc/rc.d/functions: line 506: `        done < <(findmnt -mrunRo
TARGET,FSTYPE,OPTIONS /)

But it seem that the daemon can run correctly, so should I need to fix it
and how to fix it ?