This is because you have virtual shadow maps turned on. VSM is supposed to be used with Nanite only, so you either need to make every mesh in your project into a Nanite mesh, or search your project settings for “Shadow” and change the Shadow Map Method to Shadow maps which work with non-nanite geometry.
Basically, you should either use all Nanite meshes, or all traditional meshes in your project. If you’re going to go all nanite, make sure your meshes are actually high poly. Otherwise you’ll run into more rendering issues.