Error in Creation of dataset using Manifest File in AWS Rekognition

I am trying to implement an Multi-label Image classification model in AWS Rekognition. I used manifest file to create the dataset in AWS Rekognition, but the Rekognition console cannot take the dataset from s3 bucket. while creating the dataset, the console has following errors:

1. Amazon Rekognition custom labels cannot get the dataset entries. Try refreshing the console.
2. The manifest file contains too many invalid rows.

I have created the manifest file using the link: https://docs.aws.amazon.com/rekognition/latest/customlabels-dg/md-create-manifest-file-classification.html

I followed the steps as described in the following link to create the dataset in AWS Rekognition: https://docs.aws.amazon.com/rekognition/latest/customlabels-dg/md-create-manifest-file.html#create-dataset-procedure-manifest-file

The s3 bucket has two folders

1. Train - storing my training images
2. Manifestfiles - storing the manifest file

Any help will be appreciated.