Null pointer Exception in Send variables to Start process

Camunda 7 Topics Discussion & Questions
1

First, I’m sorry for my English.

I’m doing a high school job, and we need to use Camunda. I’ve never programmed, and generated a spring-boot project using the archtypes camunda.

When sending a message in postman, I get a NullpointerException error. can you help me?

Here’s my BPMN, and my Java code and my error
process.bpmn (2.8 KB)

44
442520×1840 971 KB
![54|611x500]
57
572510×700 354 KB

54
542138×1748 640 KB

Thanks =)