Activity and branches tabs seems to be producing the following errors

https://rollbar.com/i386/blueocean/items/72/
https://rollbar.com/i386/blueocean/items/71/
https://rollbar.com/i386/blueocean/items/73/

Rollbar thinks this change by tscherler was the suspect deploy that introduced the problem but I can't see how https://github.com/jenkinsci/blueocean-plugin/commit/6040ecb4d15c69c8f0c652fcdd830e2785cba3d9 but it may have occurred in an earlier deploy.