They do. The error rates in EU spending are not higher than the rates in UK spending.
"Material error" doesn't even mean it was spent incorrectly, it means there was some problem with some part of the oversight, allocation or spending.
Ok so they have formulated a way to sign off their accounts but accepts around 4% of the budget has some issues. So 4% of roughly £110B is around £4.4 billion!
4% sounds so much nicer
When do I get to sign off my business accounts with 4% error - maybe I should use the EU's Court of Auditors to do that
https://fullfact.org/europe/did-auditors-sign-eu-budget/