To enable barcode scanning in the web app. - error while calling JS Lib

  Hi i am trying to get a barcode scanner to work in the web app using HTMLSnippet as as to be able to scan barcodes using the device’s camera over the browser.  i have Configured 2 HTML Snippets, 1 for the HTML codes and the other is for the JavaScript codes.    However when i tried to load the page with the HTML and JS.  i am only able to get the HTML portion working. but there is some error in the JavaScript portion as shown below.  i have also tested using the same JS and HTML code in a separate standalone HTML page and the JS lib is working.   Please help.  Thanks
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