Rpi docker based hass.io: upgrade from 0.103.5 to 0.115.3 not entire kosher

Reincarnated my rpi (flash died) with HASS on it since “winter is coming”…

In older version, IIRC I had Hass.io sidebar icon. So I found that I could simply click “Upgrade” on Assistant item there, and finally it was the homeassistant/raspberrypi3-homeassistant:0.115.3 docker image which was running. After upgrade finished and I reloaded the page, Hass.io sidebar icon changed to Supervisor (ok, doesn’t matter to me). But problems started to appear: If I choose either Supervisor or Configurator, only an empty blank frame shows and the Console gets a new

VM406 chunk.57b3edaf03f03f999e2a.js:2 Uncaught (in promise) ReferenceError: regeneratorRuntime is not defined
    at VM296 chunk.57b3edaf03f03f999e2a.js:2
    at VM296 chunk.57b3edaf03f03f999e2a.js:2
    at Object.<anonymous> (VM296 chunk.57b3edaf03f03f999e2a.js:2)
    at o (VM293 entrypoint.js:1)
    at Module.3 (VM297 chunk.0ebda88ce75397d2f09b.js:1)
    at o (VM293 entrypoint.js:1)

error dump then each time. I wonder if there is an easy way to mitigate it somehow and what could be the cause?