Alfresco Activiti workflow deployment issues: Form key null,

Alfresco workflow :

Ever noticed below errors?

http://localhost:8080/alfresco/service/api/workflow-instances/activiti$3422

Find the workflow id from the workflow console:

Error as below?

{
    "status" : 
  {
    "code" : 404,
    "name" : "Not Found",
    "description" : "Requested resource is not available."
  },  
  
  "message" : "09090002 Unable to find workflow instance with id: activiti$ContentApprovalFlow:1:5605",  
  "exception" : "",
  
  "callstack" : 
  [ 
      
  ],
  
  "server" : "Community v6.1.2 (r589dc49b-b205) schema 13,001",
  "time" : "Oct 9, 2019, 1:35:17 PM"
}

Solution encode the request and access like
http://localhost:8080/alfresco/service/api/workflow-instances/activiti%245905?includeTasks=true


Error as below?

{
    "status" : 
  {
    "code" : 500,
    "name" : "Internal Error",
    "description" : "An error inside the HTTP server which prevented it from fulfilling the request."
  },  
  
  "message" : "09090001 Wrapped Exception (with status template): null",  
  "exception" : "",
  
  "callstack" : 
  [ 
      
  ],
  
  "server" : "Community v6.1.2 (r589dc49b-b205) schema 13,001",
  "time" : "Oct 9, 2019, 2:24:32 PM"
}

Solution: Check your definition if it is missing formkeys are configured.

alfresco formkey