Excel Exporter does not want to create excel file. This error does not show when a CSV template is used. Is there an issue in userlib or when creating the template?

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Expected response body to be JSON. Instead received: "" Error: Expected response body to be JSON. Instead received: ""    at y (http://localhost:8080/mxclientsystem/mxui/mxui.js?638537929762266638:68:21469)    at async http://localhost:8080/mxclientsystem/mxui/mxui.js?638537929762266638:68:36374    at async h.executeMicroflow (http://localhost:8080/mxclientsystem/mxui/mxui.js?638537929762266638:66:29279)    at async http://localhost:8080/mxclientsystem/mxui/mxui.js?638537929762266638:66:6351
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2 answers
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A couple of things you could check:

- Does it work with *xls, but not with *xlsx ? This was an issue for some excel import/export modules. Make sure to download the latest version for your Mendix version as well as the compatible versions for modules that are a prerequisite.

- Do you have 'duplicate' jar files in your appfolder\userlib\ directory ? eg commons-io-2.6.jar and commons-io-2.8.0.jar. -> make a backup copy of the userlib folder (just in case) and remove all the outdated (earlier versions) for any duplicate you find.

 

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File that clashed was a xbean.jar and xmlbean.jar file

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