You can try Clear the Cache and if that doesn’t work try creating a defauly.sitemap file in the $OH_CONF/sitemaps folder ($OH_CONF is /etc/openhab2 for apt-get and openhabian installations).
You can try Clear the Cache and if that doesn’t work try creating a defauly.sitemap file in the $OH_CONF/sitemaps folder ($OH_CONF is /etc/openhab2 for apt-get and openhabian installations).