Aws iOS sdk Pre-singed url giving "SignatureDoesNotMatch" error

Have problem accessing file using presigned url generated by aws sdk, given all necessary permission for the bucket.

I have downloaded the sample code from there github and changed the below Awscredential provider as per my requirement.

The changes are below

AWSStaticCredentialsProvider *credentialsProvider =[[AWSStaticCredentialsProvider alloc] initWithAccessKey:S3AccessKey secretKey:S3secretKey];

AWSServiceConfiguration *configuration = [[AWSServiceConfiguration alloc] initWithRegion:AWSRegionUSEast1 credentialsProvider:credentialsProvider];

AWSServiceManager.defaultServiceManager.defaultServiceConfiguration = configuration;

Even though i upload the file sucessfully to aws I am not able to access them using the presigned url which i get from the aws sdk while uploading.

Can anyone point out the things i am missing in order to access the files using presigned url.

when url is loaded in browser SignatureDoesNotMatch error is shown