Hi Savita,
If you mean the Excel Exporter from the AppStore? Then the answer is yes. Do make sure that your configuration is 100% correct, if you moved/renamed entities to other modules or removed/renamed associations/attributes it is possible that your configuration is not correct anymore (if it existed before the changes).
The validation on the Excel Exporter is not updating unless you actually change the configuration. Recently I had issues with this where the Excel Exporter gave a similar gibberish error and it was caused because I moved an entity to another module, released the new version to production with an existing Excel Export configuration. It showed all fine and until I opened a column record I did not notice that the attribute configuration was missing. Do make sure to also update the MX Model reflection cache otherwise you won't notice this either.
Hope this helps.
Regards, Mitchel