YOLO v5 test images are not successful

Hello Everybody, I am running YOLOv5 collab notebook for testing customized roboflow dataset.

I created and annotated my dataset on roboflow. Then split it into train, test and validate images.

The training finishes and then when I run inference on test images to get labelled output like the notebook instructs, I get noisy output with no labels.
Exactly like the image below:


Please help! Thank you in advance!