Error during accelerometer data streaming

After update to latest Ratos 2.1 (v2.1.0-RC3-25-g0477559b) I get this error when I want to enable de data stream on the beacon. Data stream on EBB42 works. Beacon seams to work normally.

I get the same result if I disable all extensions in Chrome and restart chrome.

Is this update related or did I mess up something else?

Any help is appreciated