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TypeError: Object.keys thrown by a non-object when loaded with knox

I am using knox ( https://github.com/LearnBoost/knox ) to upload the file to Amazon S3. I just migrated my node application to Amazon EC2 and have the following error while loading using knox. It seems that I have all the libraries installed. The same code was OK on nodejitsu. I am completely new to node / JS, so I'm not sure what that means.

/home/ec2-user/foo/node_modules/knox/lib/auth.js:208 Object.keys(url.query).forEach(function (key) { ^ TypeError: Object.keys called on non-object at Function.keys (native) at Object.exports.canonicalizeResource (/home/ec2-user/foo/node_modules/knox/lib/auth.js:208:10) at Client.request (/home/ec2-user/foo/node_modules/knox/lib/client.js:275:22) at Client.put (/home/ec2-user/foo/node_modules/knox/lib/client.js:326:15) at Client.putStream (/home/ec2-user/foo/node_modules/knox/lib/client.js:408:18) at /home/ec2-user/foo/node_modules/knox/lib/client.js:378:20 at Object.oncomplete (fs.js:93:15)
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Perhaps you, like me, passed the string "mimetype" as the third parameter in the client.putFile () function ...

You must pass an object defining the headers of the content type:

 client.putFile(localPath, s3Path, {'Content-Type': mimetype} ,function(err, result) {});

or just ignore the third parameter (for example, I did):

 client.putFile(localPath, s3Path, function(err, result) {});
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Source: https://habr.com/ru/post/1201631/

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