代码优化

ruoyi-modules/ruoyi-server/src/main/java/org/dromara/server/service/impl/ProcessProgressServiceImpl.java

@@ -106,7 +106,7 @@ public class ProcessProgressServiceImpl extends AbstractBaseService<ProcessProgr
             List<String> stepKeyList = StreamUtils.toList(approveProcessList, Process::getStepKey);
             Process nextProcess = null;
             if (StringUtils.isEmpty(lastProcessStepKey)) {
-                nextProcess = approveProcessList.get(0);
+                nextProcess = CollectionUtil.isEmpty(approveProcessList) ? null : approveProcessList.get(0);
             } else {
                 int i = stepKeyList.indexOf(lastProcessStepKey);
                 if (i < stepKeyList.size() - 1) {