vcld image capture failure

2017-05-26 10:09:01|15828|11|11|image|Module.pm:code_loop_timeout|1577|waiting for vcl-u-vm-1 to power off, code returned true
Undefined subroutine
        &VCL::Module::Provisioning::VMware::vSphere_SDK::append_text_file called at /usr/local/vcl/bin/../lib/VCL/Module/Provisioning/VMware/VMware.pm line 954 (#1)
    (F) The subroutine indicated hasn't been defined, or if it was, it has
    since been undefined.

Uncaught exception from user code:
        Undefined subroutine &VCL::Module::Provisioning::VMware::vSphere_SDK::append_text_file called at /usr/local/vcl/bin/../lib/VCL/Module/Provisioning/VMware/VMware.pm line 954.
        UNIVERSAL::AUTOLOAD('VCL::Module::Provisioning::VMware::vSphere_SDK=HASH(0x3cfda00)', '/vmfs/volumes/vmfs_vcl_vmdiff_1/vcl-u-vm-1/vcl-u-vm-1.vmx', '#os_product_name = "CentOS Linux release 7.3.1611 (Core)"') called at /usr/local/vcl/bin/../lib/VCL/Module/Provisioning/VMware/VMware.pm line 954
        VCL::Module::Provisioning::VMware::VMware::capture('VCL::Module::Provisioning::VMware::VMware=HASH(0x3c98bc8)') called at /usr/local/vcl/bin/../lib/VCL/image.pm line 160
        VCL::image::process('VCL::image=HASH(0x358ce38)') called at /usr/local/vcl/bin/vcld line 602
        VCL::vcld::make_new_child('HASH(0x3445588)') called at /usr/local/vcl/bin/vcld line 353
        VCL::vcld::main() called at /usr/local/vcl/bin/vcld line 99
2017-05-26 10:09:01|15828|11|11|image|State.pm:DESTROY|1092|VCL::image destructor called, address: 358ce38
2017-05-26 10:09:01|15828|11|11|image|State.pm:state_exit|882|beginning state module exit tasks, request state argument: <not specified>, computer state argument: <not specified>, log ending argument: <not specified>
2017-05-26 10:09:01|15828|11|11|image|DataStructure.pm:is_parent_reservation|1150|this is the parent reservation
2017-05-26 10:09:01|15828|11|11|image|utils.pm:delete_computerloadlog_reservation|5720|deleted rows from computerloadlog for reservation IDs: 11