diff --git a/packages/designer/src/designer/setting/utils.js b/packages/designer/src/designer/setting/utils.js
index 991918c54..59085e5f4 100644
--- a/packages/designer/src/designer/setting/utils.js
+++ b/packages/designer/src/designer/setting/utils.js
@@ -37,9 +37,9 @@ export class Transducer {
     if (Array.isArray(setter)) {
       setter = setter[0];
     } else if (isValidElement(setter) && setter.type.displayName === 'MixedSetter') {
-      setter = setter.props.setters[0];
+      setter = setter.props?.setters?.[0];
     } else if (typeof setter === 'object' && setter.componentName === 'MixedSetter') {
-      setter = setter.props.setters?.[0];
+      setter = setter.props?.setters?.[0];
     }
 
     if (isSetterConfig(setter)) {