HI kenya,
First you can debug your microflow IVK_ImportTemplateDocument to check if the retrieve of Template is not empty.
If this is empty, please check what is in your parameter TemplateDocument.
If the parameter TemplateDocument is also empty, you need to check where this information is coming from and where you can select the TemplateDocument.
Also you can find more information on the Excel Importer in Mendix Docs
https://docs.mendix.com/howto/integration/importing-excel-documents
Kenya,
The message ‘Something went wrong...’ is probably triggered from the StartImportByTemplate java action in the microflow IVK_ImportTemplateDocument. To find the cause of the problem, you might take a look at the more detailed error message in the Console logging (the console pane in the modeler, if you are testing locally).
If this doesn’t work, you could try to eliminate all the excel import configuration you don’t need. Maybe to start from scratch to find out the it ‘went wrong’.