Error: libstdc++.so.6 missing when starting AhsayCBS NFS on FreeBSD 10

After installing AhsayCBS on FreeBSD 10, the AhsayCBS NFS service shows following error "Shared object "libstdc++.so.6" not found, required by "NfsFbdX64":

# sh install.sh
Log Time: Fri Aug 25 17:54:53 HKT 2017
Verifying current user privilege ...
Current user has enough privilege to "install".
Start configuration on BSD distribution Platform (FreeBSD)
Installing [ NFS Service (Ahsay Systems Corporation) ]
[ NFS Service (Ahsay Systems Corporation) ] Service Script created at /usr/local/cbs/nfs/bin/cbsnfs
Install Service for BSD type OS
Copying script cbsnfs to /usr/local/etc/rc.d
You may start this service by:
sh "/usr/local/etc/rc.d/cbsnfs" start &
Remember to add an entry: cbsnfs_enable="YES" to /etc/rc.conf
[ NFS Service (Ahsay Systems Corporation) ] setup completed!
Startup [ NFS Service (Ahsay Systems Corporation) ]
Starting NFS Service (Ahsay Systems Corporation)
Started [ NFS Service (Ahsay Systems Corporation) ]
root@ahsaycbs:/usr/local/cbs/nfs/bin # sh query.sh
Service Name:         cbsnfs
Service Display Name: NFS Service (Ahsay Systems Corporation)
Service Description:  NFS Service (Ahsay Systems Corporation)
Service Path:         /usr/local/cbs/nfs/bin/startup.sh
Service Status:       Running
Shared object "libstdc++.so.6" not found, required by "NfsFbdX64"
NFS Version:
NFS Status:           Unknown
NFS Mount Point:      -1
NFS Running Session:  -1
#

Example:

The error is also show when running the AhsayCBS NFS query.sh or test.sh scripts:

# sh query.sh
Service Name:         cbsnfs
Service Display Name: NFS Service (Ahsay Systems Corporation)
Service Description:  NFS Service (Ahsay Systems Corporation)
Service Path:         /usr/local/cbs/nfs/bin/startup.sh
Service Status:       Running
Shared object "libstdc++.so.6" not found, required by "NfsFbdX64"
NFS Version:
NFS Status:           Unknown
NFS Mount Point:      -1
NFS Running Session:  -1
#