I’m not being able to recreate the error, could you share an example workflow with the params your sending? For example, does this happen in all request methods?
So, when you’re testing the node the workflow is actualy trying to run the previous http request first. You can see in the error that the node failing is called “HTTP Request” instead of “HTTP Request1”. The error message in your logs it’s also pointing at the https://www.jobfeed.de/api/v3/search url instead of the https://api.restful-api.dev/objects?id=5&id=10 you’re trying to run