Reset hue binding

it seems, your configuration/cache/temp is out of sync, try this one:

and not only delete the Content of /var/lib/openhab2/cache and /var/lib/openhab2/tmp but also try to empty /var/lib/openhab2/config. OH2 will start slowly (depending on how many configuration files you have in place), but after a few minutes it should be online and hopefully without any problems.