Migrating public folders to EXO, pre-migration script error

Hello, I am trying to migrate from 2013 exchange to EXO and part of that is to migrate public folders. I am running the scripts listed here: https://docs.microsoft.com/en-us/exchange/collaboration/public-folders/migrate-to-exchange-online?view=exchserver-2019 When I run the Sourcesidevalidations script I get a SourceSideValidations log that states "There are 1 entries difference between AD and Exchange, fix them before starting migration. The EntryID is present in AD but not in Exchange. " The log doens't say what is out of sync. If you have seen this before or have info I would really appreciate it. thanks!