That would be really good, because I tried everything to make it work. Created a new account loaded a sample workflow and modify only 1 character in the text and got this error. So for example if I create a new workflow and load the Customer Satisfaction Survey template. And modify the last end call node text. Like remove the last "!" character and try to save it I got this error each value in nodes.tool.server.credentialId must be a UUID. And it was working great until 2025. 11. 26th but on 2025. 11. 27th could not save anymore.