Why is there a lot of missing content in the Knowledge Base?

[Anonymous]

Looking through the knowledge base and a lot of the links redirect to:

An Error occurred while processing your request. Please try again later.

examples:

https://community.marketo.com/MarketoArticle?id=kA050000000Kyqq
https://community.marketo.com/MarketoArticle?id=kA050000000Kyxj

[Anonymous]

Several topics have been moved from "Help Articles" to "Resources", mainly those containing sample code.
They have new URL. Bookmarked articles will raise that error message.

The solution is searching by keywords.