We utilize Front App (an email host) and they have a script you can add to your site to allow for live chat. I turned on the JS Injector and added the script provided by Front. Now, when users attempt to upload documents, this error below is presented. This error only became an issue once the script was added. Any ideas how the script could be affecting file upload? 

"An error occurred while attempting to process /file/ajax/submitted/document/form-hu9rD8N-D2Wb_priL8647rP112E9Fam1CehCE_so_el:: callback must be a function"