Version Sensor "Error fetching version information for hassio"

Version Sensor seems broken for me in HASSIO, was working until few days ago, now goves me repeating error, setup according to documentation:

my config:
sensor:
- platform: version
name: version_available
source: hassio
image: raspberrypi3

in logs this error repeats: Error fetching version information for hassio
2

any advice appreciated