Attempting to search content in a XLSX file using Livesearch doesn't render results.

Issue Summary

User is unable to search the Excel file with xlsx extension, but able to search the Excel file with XLS extension.

Steps to Reproduce

1. Create a page.
2. Upload a XLSX and XLS file to the page.
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3. Insert LiveSearch macro on same page or page in the same space.
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4. Search for content in the spreadsheets

Expected Results

Display the name of the spreadsheet containing the content of the search.

Actual Results

Empty results or only works for XLS

Workaround

Only use the XLS extension.