Running PeopleSegNet Deployable model from NGC

I am trying to run deployable model of peopleSegNet from NGC, it has 2 files etlt and int8.txt.
Following is the config file I am using to run it but it gives engine build error.

[property]
gpu-id=0
net-scale-factor=0.0039215697906911373
model-color-format=0
int8-calib-file=./peopleSegNet_resnet50_int8_cal.txt
#labelfile-path=./labels.txt
tlt-encoded-model=./peopleSegNet_resnet50.etlt
tlt-model-key= nvidia_tlt
input-dims=3;960;576;0
uff-input-blob-name=input_1
batch-size=4

0=FP32, 1=INT8, 2=FP16 mode

network-mode=0
num-detected-classes=1
interval=0
gie-unique-id=1
is-classifier=0
output-blob-names= output_cov/Sigmoid;output_bbox/BiasAdd

[class-attrs-all]
pre-cluster-threshold=0.1
group-threshold=1
eps=0.2
roi-top-offset=0
roi-bottom-offset=0
detected-min-w=0
detected-min-h=0
detected-max-w=0
detected-max-h=0

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