ans =

    'models\widerface-resnet-101-simple-sample256-posfrac0.5-N25-bboxreg-cluster-scaled'

Trying to initialize the structure of resnet-101-simple
Unknown model: cannot initialize.
Loading pretrained weights from ./trained_models/imagenet-resnet-101-dag.mat
Downloading model imagenet-resnet-101-dag from http://www.vlfeat.org/matconvnet/models/imagenet-resnet-101-dag.mat to ./trained_models/imagenet-resnet-101-dag.mat ... 
--2021-06-21 19:55:50--  http://www.vlfeat.org/matconvnet/models/imagenet-resnet-101-dag.mat 
Resolving www.vlfeat.org... 64.90.48.57 
Connecting to www.vlfeat.org|64.90.48.57|:80... connected. 
HTTP request sent, awaiting response... 301 Moved Permanently 
Location: https://www.vlfeat.org/matconvnet/models/imagenet-resnet-101-dag.mat [following] 
--2021-06-21 19:55:51--  https://www.vlfeat.org/matconvnet/models/imagenet-resnet-101-dag.mat 
Connecting to www.vlfeat.org|64.90.48.57|:443... connected. 
OpenSSL: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version 
Unable to establish SSL connection.