Hi Lee, your input object is wrong
Check the below forum where the developer faced the same issue as you
https://community.mendix.com/link/space/app-development/questions/133890
Actually, you have to pass your entity which is generalized with filedocument as an input object to your email template
ExcelImport과정에서 아래와같이 시작되는 오류를 접하게 되었습니다.
com.mendix.core.CoreRuntimeException: com.mendix.systemwideinterfaces.MenxdixRuntimeException: ...
Document could not be imported, because: Can't open workbook - unsupported file type: UNKNOWN at com.mendix.basis.actionmanagement AftionManager.executeSync(ActionManager.scala:108)
이라는 오류를 접했습니다. 다른곳에 찾아봐도 해결방법이 없는데 어떤점이 문제일까요?