No route found to continue from step node0 in model /var/workflow/models/<nameOfWorkflowModel>. Probably a configuration error.

I'm having trouble calling a sub-workflow process in my main workflow. To give some context, for every container step I use to call another workflow, I use a Set Variable to set some specific variables I used on the sub-workflow. As you can see in the picture below, I have the Set Variable named Input Prod Planning Email 1 and then the Production Planning Email 1. Here the workflow is working as expected.

Later on, in the workflow, I have the same to Set Variable and Container Step, but they are named differently. In the Input Prod Planning Email 2, I have the same mapping as Input 1, and Production Planning Email 2 as the same sub-workflow as Production 1.

When they are executed I have the following error: No route found to continue from step node0 in model /var/workflow/models/notifyprodplanningsubprocess1. Probably a configuration error, and here is the screenshot as well: 

To me, this is really weird because in the past I have used multiple container steps calling the same sub-workflow on other workflows and they are working just fine. Any ideas what could be causing the error?