Error: Function call failed, while loading Deep learning network into Simulink in MATLAB r2019b

=== Simulation (Elapsed: 14 sec) ===

Error:Undefined function or variable 'dltargets.cudnn'.

P-code function 'DeepLearningNetwork.p' produced an error.

Error:Function call failed.

P-code function 'YOLOv2Network.p' produced an error.

Error:Function call failed.

Function 'loadDeepLearningNetwork.m' (#42.3494.3544), line 98, column 15:

"coder.YOLOv2Network(coder.const(matfile),param{:})"

Launch diagnostic report.

Error:Function call failed.

Function 'fruit_detection_yolo_v2.m' (#39.125.180), line 5, column 20:

"coder.loadDeepLearningNetwork('Zedo\detectorYolo2.mat')"

Launch diagnostic report.

Error:Persistent variable 'yolodetector' must be assigned before it is used. The only exception is a check using 'isempty(yolodetector)' that can be performed prior to assignment.

Function 'fruit_detection_yolo_v2.m' (#39.209.221), line 8, column 22:

"yolodetector"

Launch diagnostic report.

Error:Undefined function or variable 'bboxes'. The first assignment to a local variable determines its class.

Function 'fruit_detection_yolo_v2.m' (#39.190.196), line 8, column 3:

"bboxes"

Launch diagnostic report.

Error:Undefined function or variable 'Scores'. The first assignment to a local variable determines its class.

Function 'fruit_detection_yolo_v2.m' (#39.197.203), line 8, column 10:

"Scores"

Launch diagnostic report.

Error:Undefined function or variable 'unusedU0'. The first assignment to a local variable determines its class.

Function 'fruit_detection_yolo_v2.m' (#39.204.205), line 8, column 17:

"~"

Launch diagnostic report.

Error:Function call failed.

Function 'VehicleDetectionYolov2' (#23.55.100), line 3, column 1:

"[bboxes,Scores] = fruit_detection_yolo_v2(In)"

Launch diagnostic report.

Error:Undefined function or variable 'bboxes'. The first assignment to a local variable determines its class.

Function 'VehicleDetectionYolov2' (#23.56.62), line 3, column 2:

"bboxes"

Launch diagnostic report.

Error:Undefined function or variable 'Scores'. The first assignment to a local variable determines its class.

Function 'VehicleDetectionYolov2' (#23.63.69), line 3, column 9:

"Scores"

Launch diagnostic report.

Error:Errors occurred during parsing of MATLAB function 'ObjectFruitDetection/VehicleDetectionYolov2'

Error:Simulink cannot determine sizes and/or types of the outputs for block 'ObjectFruitDetection/VehicleDetectionYolov2' due to errors in the block body, or limitations of the underlying analysis. The errors might be inaccurate. Fix the indicated errors, or explicitly specify sizes and/or types for all block outputs.

Error:Simulink cannot determine sizes and/or types of the outputs for block 'ObjectFruitDetection/VehicleDetectionYolov2' due to errors in the block body, or limitations of the underlying analysis. The errors might be inaccurate. Fix the indicated errors, or explicitly specify sizes and/or types for all block outputs.

Error:An error occurred while propagating data type 'uint8' through 'ObjectFruitDetection/VehicleDetectionYolov2'.