Hi John,
This error is a common issue occurring with duplicate conflicting jars , the problem is jars used by excel export is also shared by excel import , SAML ,email and some other so it becomes difficult to find out which is root causing library or jar
there is 2 ways you can handle this
1) Go to your userlib find duplicate jars and delete jars which has lower version
2) create a branchline , empty your userlib , import your all module from marketplace one by one , run locally deploy and test you app, if works fine merge it ( Works always for me)
Good luck!
Hi John,
Have you checked your userlib directory and removed outdated jar files?
Maybe user lib directory conflicted. Eliminating outdated jar files would be the first step.
Hope it helps!
Thanks & Regards,
Manikandan K