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Showing posts from May, 2026

Hell of sitecore aliases pipeline breaking the site with 500 error

Hello Friends, I belive this blog post is very important for everyone because, It has some very serious effect on working of your headless website, i will share my experience what we faced and how we resolved it Issue we started facing Our site started giving "Key cannot be null or empty" with YSOD like following  Side affect Because of this 500 error, Our site pages were showing 500 custom error page intermittently and our MAU (Monthly Active User) drop rate increased. Sitecore KB There is already Sitecore KB article talking about this error but the patch which is provided on this link is confusing as well as very huge and it could bring other issues along with it as that upgrade patch also has lot of other things too which i did not want to introduce in our stable CMS. Known Issues - Retrieving the child items of resource items is not thread-safe Observation Though the surfaced exception was looking similar and giving same error and behavior given on this article, We looked...