CredentialsError: Missing credentials in config, if using AWS_CONFIG_FILE, set AWS_SDK_LOAD_CONFIG=1

Confirm by changing [ ] to [x] below to ensure that it’s a bug:

• [x ] I’ve gone through Developer Guide and API reference
• [x ] I’ve checked AWS Forums and StackOverflow for answers
• [ x] I’ve searched for previous similar issues and didn’t find any solution

Describe the bug

I use AWS javascript SDK for enabling my web app clients upload their files to my s3 bucket. But for some client the “managed upload” getting failed (not always but often). Could you please help me debug this, as i am sure i correctly followed all steps mentioned in docs. Please see below for details:

ERROR REPORT

CredentialsError: Missing credentials in config, if using AWS_CONFIG_FILE, set AWS_SDK_LOAD_CONFIG=1
    at r (https://sdk.amazonaws.com/js/aws-sdk-2.818.0.min.js?_=1615666287497:78:2417 )
    at constructor.getCredentials (https://sdk.amazonaws.com/js/aws-sdk-2.818.0.min.js?_=1615666287497:78:2945 )
    at constructor.<anonymous> (https://sdk.amazonaws.com/js/aws-sdk-2.818.0.min.js?_=1615666287497:79:3316 )
    at constructor.callListeners (https://sdk.amazonaws.com/js/aws-sdk-2.818.0.min.js?_=1615666287497:81:6740 )
    at constructor.emit (https://sdk.amazonaws.com/js/aws-sdk-2.818.0.min.js?_=1615666287497:81:6480 )
    at constructor.emitEvent (https://sdk.amazonaws.com/js/aws-sdk-2.818.0.min.js?_=1615666287497:80:24217 )
    at constructor.e (https://sdk.amazonaws.com/js/aws-sdk-2.818.0.min.js?_=1615666287497:80:19827 )
    at i.runTo (https://sdk.amazonaws.com/js/aws-sdk-2.818.0.min.js?_=1615666287497:82:30056 )
    at constructor.runTo (https://sdk.amazonaws.com/js/aws-sdk-2.818.0.min.js?_=1615666287497:80:21515 )
    at constructor.send (https://sdk.amazonaws.com/js/aws-sdk-2.818.0.min.js?_=1615666287497:80:21408 )

SDK script used : https://sdk.amazonaws.com/js/aws-sdk-2.864.0.min.js

AWS initialization Code :

function initializeS3() {
	var albumBucketName = aws_details.bucket_name;
	var bucketRegion = aws_details.bucket_region;
	var IdentityPoolId = aws_details.identity_pool_id;
	var IdentityPoolRegion = aws_details.identity_pool_region;
	$("#upload-box").draggable();
	if(typeof(AWS) != 'undefined') {
		console.log("initializing s3 : done");
		AWS.config.region = bucketRegion;
		AWS.config.update({
			region: IdentityPoolRegion,
			credentials: new AWS.CognitoIdentityCredentials({
				IdentityPoolId: IdentityPoolId
			})
		});
		globalBucket = new AWS.S3({
			apiVersion: '2006-03-01',
			params: {Bucket: albumBucketName},
			httpOptions: {timeout: 1800000}
		});
	}
	else {
		console.log("initializing s3 : redo");
		setTimeout(initializeS3, 1000);
	}
}

UPLAOD CODE:

function process_uq(startingIndex, endingIndex) {
	for(current_index = startingIndex; current_index <= endingIndex; current_index++) {
		var current_item = global_upload_queue[current_index];
		var total_file_size = current_item.size;	
		
		var params = {
			Bucket: aws_details.bucket_name,
			Key: current_item.aws_key,
			Body: current_item.file,
			ACL: "public-read"
		};
		
		global_ongoing_xhr_count++;
		global_upload_queue[current_index]['upload_instance'] = new AWS.S3.ManagedUpload({queueSize : 3, partSize : const_min_chunk_size, params : params});
		global_upload_queue[current_index]['upload_instance'].on('httpUploadProgress', function(evt) {
			var local_uploadPartParams = this.service.config.params;
			//for getting queue index from upload id
			for(xyz in global_upload_queue) {
				if(global_upload_queue[xyz]['aws_key'] == local_uploadPartParams['Key']) {
					var local_index = xyz;
				}
			}
			//global_upload_queue[local_index]['total_size_uploaded'] += evt.loaded;

			showProgressBarMulti({
				uq_index : local_index,
				loaded : evt.loaded
			});
		});

		var promise = global_upload_queue[current_index]['upload_instance'].promise();

		promise.then(
			function(data) {
				global_ongoing_xhr_count--;
				//for getting queue index from upload id
				for(xyz in global_upload_queue) {
					if(global_upload_queue[xyz]['aws_key'] == data.Key) {
						local_index = xyz;
					}
				}			
				var index = local_index;
				completeMultiPartUpload(index);
			},
			function(err) {
				console.log("retrying : process_uq(" + startingIndex + ", " + endingIndex + ")");
				if(!global_upload_cancelled) {
					setTimeout(function() {
						process_uq(startingIndex, endingIndex);
						sendErrorLogToServer(err.stack);
					}, 10000);
				}
			}
		);
	}
}

Is the issue in the browser/Node.js? Browser

SDK version number https://sdk.amazonaws.com/js/aws-sdk-2.864.0.min.js

To Reproduce (observed behavior) It is sometime working and sometime failing

[adampwright]

Same problem

[ajredniwja]

Hi there, have you tried explicitly setting the credentials in the constructor, I suspect that they get overwritten when the S3 client is initialized.

Basically doing something like:

var s3 = new aws.S3({region: 'us-west-2', credentials: creds});

May also wanna check if they are getting set with using something like:

console.log(s3.config.credentials)

Also can you point out what documentation you followed?