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i am getting this error on uploading a file in the input text box.

Uncaught DOMException: Failed to execute 'readAsDataURL' on 'FileReader': The object is already busy reading Blobs.

i have to upload the html file and preview the text in that file but while uploading it is throwing this error in the console. how to resolve this error. here is my javascript code--

I have this form :

I have a form for uploading a file on a site I'm coding. From the URL http://localhost:8080/uploadRevision/{docId} It should be directing to the URL http://localhost:8080/uploadRevisionLanding and then redirected back to the userDashboard.

However when I submit the form it takes me to http://localhost:8080/uploadRevision/uploadRevisionLanding so it's appending /uploadRevisionLanding to the URL rather than going from the root (sorry if this isn't the right terminology).

I'm using SpringIO and Thymeleaf and I'd coded something else to work a similar way which works fine.

My form

I am trying to upload image file(s) for my project with bootstrap jquery using the HTML5 input type="file" tag in ASP.NET 3.5. I tried so many different methods to do it without using File Upload. However, I couldn't do it with success.

I need your help please. How can I use "input type="file" … " instead of asp:FileUpload

Thanks in advance.

.aspx design page is like this: