Context.getCommandContext() is null

Camunda 7 Topics Discussion & Questions
1

When I am using TaskService, I want to obtain the user’s task list information, but he reported an error. He reminded
2024-12-19 17:33:58.347 WARN 29056 --- [nio-8081-exec-4] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.http.converter.HttpMessageNotWritableException: Could not write JSON: Cannot invoke "org.camunda.bpm.engine.impl.interceptor.CommandContext.getExecutionManager()" because the return value of "org.camunda.bpm.engine.impl.context.Context.getCommandContext()" is null; nested exception is com.fasterxml.jackson.databind.JsonMappingException: Cannot invoke "org.camunda.bpm.engine.impl.interceptor.CommandContext.getExecutionManager()" because the return value of "org.camunda.bpm.engine.impl.context.Context.getCommandContext()" is null (through reference chain: java.util.ArrayList[0]->org.camunda.bpm.engine.impl.persistence.entity.TaskEntity["execution"])]

My code is as follows：

import org.camunda.bpm.engine.TaskService;
import org.camunda.bpm.engine.task.Task;

    @Autowired
    private TaskService taskService;

    /**
     * Query the task list of a user
     *
     * @param userName user name
     * @return task c
     */
    @GetMapping
    public List<Task> findUserTask(@RequestParam String userName) {
        return taskService.createTaskQuery().taskAssignee(userName).list();
    }