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Issue After Upgrading from DNN 09.13.9 to 10.1.2 - ArgumentException & TypeLoadException Errors(CachingProvider &ModuleIndexer)

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Shivam S

New Around Here

Posts: 9

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10/27/2025 10:07 AM

I recently upgraded my DNN website from version 09.13.9 to 10.1.2. After the upgrade, I started encountering several errors in the logs related to caching and module indexing. The errors occur when the system attempts to index certain modules or load business controller classes. Specifically, the errors indicate an issue with an empty or null CacheKey parameter, causing a System.ArgumentException.

Additionally, there are several System.TypeLoadException errors, indicating that types such as DotNetNuke.Modules.Documents.DocumentController and DotNetNuke.Modules.Contacts.ContactController could not be loaded from the updated version of DNN.

2025-10-27 13:12:08,213 [SERVER5WIN2016][Thread:61][ERROR] DotNetNuke.Services.Search.ModuleIndexer - System.ArgumentException: Argument cannot be null or an empty string. Parameter name: CacheKey
at DotNetNuke.Services.Cache.CachingProvider.GetCacheKey(String cacheKey)
at DotNetNuke.Common.Utilities.DataCache.GetCache(String cacheKey)
at DotNetNuke.Framework.Reflection.CreateType(String typeName, String cacheKey, Boolean useCache, Boolean ignoreErrors)
at DotNetNuke.Services.Search.ModuleIndexer.GetModulesForIndex(Int32 portalId)

at DotNetNuke.Services.Cache.CachingProvider.GetCacheKey(String cacheKey)
at DotNetNuke.Common.Utilities.DataCache.GetCache(String cacheKey)
at DotNetNuke.Framework.Reflection.CreateType(String typeName, String cacheKey, Boolean useCache, Boolean ignoreErrors)
at DotNetNuke.Services.Search.ModuleIndexer.GetModulesForIndex(Int32 portalId)

I would greatly appreciate any insights into why these errors are occurring after the upgrade, and if there is any known fix for this issue. If it’s related to the cache key handling or changes in the module architecture post-upgrade, any guidance would be very helpful.

Daniel Valadas

Veteran Member

Posts: 349

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MVP

Engaged Reader

Avid Reader

10/27/2025 2:40 PM

The documentes module is probably this one https://github.com/DNNCommunity/DNN.Documents the last release dates from 2018 and it was not updated to work with DNN 10 due to lack of either someone contribute a fix or some sponsorship, see https://github.com/DNNCom....Documents/issues/25 If you are interested in doing either of those things, I'd be more than willing to help.

For the contacts module I do not remember that one being part of the former core module or other open source solution I know of, you can try to see if you find some clues about where that one came from in the Extensions page, release notes section, maybe you would get some clues as to who to contact for updates for it.

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