Long URL watcher status[414]" in Kibana

Thank you for your reply! We shorten the path using the below format:
"Short url target path must be in the format "/app/{{appId}}", found "/api/reporting/generate/printablePdf""

It was working and all of a sudden we saw another error today:
Error: Protocol error (Runtime.callFunctionOn): Target closed."}]" }

Would you know what could have caused this issue