TLT-deepstream sample app error

The config is the same as the one in git repo.

[property]
gpu-id=0
net-scale-factor=1.0
offsets=103.939;116.779;123.68
model-color-format=1
labelfile-path=./nvdsinfer_customparser_ssd_tlt/ssd_labels.txt
tlt-encoded-model=./models/ssd/ssd_resnet18.etlt
tlt-model-key=nvidia_tlt
uff-input-dims=3;544;960;0
uff-input-blob-name=Input
batch-size=1
## 0=FP32, 1=INT8, 2=FP16 mode
network-mode=2
num-detected-classes=4
interval=0
gie-unique-id=1
is-classifier=0
#network-type=0
output-blob-names=NMS
parse-bbox-func-name=NvDsInferParseCustomSSDTLT
custom-lib-path=./nvdsinfer_customparser_ssd_tlt/libnvds_infercustomparser_ssd_tlt.so

[class-attrs-all]
pre-cluster-threshold=0.3
roi-top-offset=0
roi-bottom-offset=0
detected-min-w=0
detected-min-h=0
detected-max-w=0
detected-max-h=0