update - 兼容脏数据,personId 为 null

workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/helper/CustomTaskHelper.java

@@ -342,6 +342,7 @@ public class CustomTaskHelper {
         }
         return new ArrayList<>(delegateAssigners.stream()
                 .filter(i -> StringUtils.hasText(i.getPersonId()))
+                .filter(i -> !Objects.equals(i.getPersonId(), "null"))
                 .collect(Collectors.toMap(BpmnTaskDelegateAssigner::getPersonId, Function.identity(), (s, t) -> s))
                 .values());
     }