Deadlock found when trying to get lock; try restarting transaction #3866

**Describe the bug**


**Expected behavior**
succeed

**Code**
public List execBatchCompleteTask(List approveProcessVos) {
List result = new ArrayList<>();
approveProcessVos.forEach(vo -> {
String actTaskId = vo.getActTaskId();
Map variables = vo.getVariables();
taskService.complete(actTaskId, variables);
result.add(new ProcessAdvanceRespondVo(vo.getProcessId(), vo.getProcessInstanceId()));
});
queryNewestTask(result);
return result;
}

**Additional context**
Add the version of Flowable that you are using, the database vendor and if you are using Flowable within Spring Boot, the Flowable Task application etc.