/execute cannot summon entities that are both named and rotated.

If the /execute command is being used to run /Summon, even if you specify rotated as, you can't have an entity both named and rotted. For example “Run summon bat Sam ~~~~~” or” Run summon bat Sam ~~~ facing at@s” when using /Execute will bring up a syntax error even when using rotated as, even though doing the exact same thing outside of commands works fine.