barchart: Warning: a promise was created in a Promise.try handler but was not returned from it

[go-oleg]

barchart is throwing a promise related warning when run in juttle-engine

emit -limit 1 | put name = "hello", value = 10 | view barchart

Warning: a promise was created in a Promise.try handler but was not returned from it
    at BaseDataTarget.extend.push (eval at <anonymous> (http://localhost:8080/assets/app.js:1:0), <anonymous>:24:27)
    at View.handleViewMsg (eval at <anonymous> (http://localhost:8080/assets/app.js:1:0), <anonymous>:44:41)

It does not appear to have an impact on the functionality.