Failed to start workflow Procedure or function CreateWorkflowInstance

Error:-

Failed to start workflow. Procedure or function 'CreateWorkflowInstance' expects parameter '@InstanceID', which was not supplied.

If  you get the above error in Nintex Workflow 

while starting a workflow

Cause:-You  have done something wrong in Nintex workflow Database while taking backup or  you have updated the newer version of database.

Solution:-

1. Open Central Admin - Nintex Workflow Management - Database setup - Edit

2. Set SQLserver, dbname (check connect to existing) and OK

3. It will take 15 minutes to reflect the changes wait 15 minutes or to see immediate changes .

4. do IISRESET.

5. Restart SharePoint Timer Job in "Services" now test your workflow again.