Fix NoMethodError

✅ Solution

This "NoMethodError: undefined method `have_capability?' for nil" error in Fluentd usually means you're calling `have_capability?` on a variable that's unexpectedly `nil`. To fix this, ensure the variable expected to hold the object with the `have_capability?` method is properly initialized and assigned a value before you call the method; add a check like `variable&.have_capability?` to avoid calling the method on `nil`.