HapPanel Gihub Link

[ysc (Yannick Schaus)]

This might help you, your JRE is probably too old:

HABPanel Widget Gallery

Looks like another TLS issue: first try running curl https://community.openhab.org/tags/c/apps-services/habpanel/widgetgallery.json on your openHAB machine, if you do get the same error either try upgrading your JRE like @Dr_Kuebel did here: https://community.openhab.org/t/oh-2-2-stopped-working-after-updating-java/35290?u=dr_kuebel Or follow these steps (including the Java part): https://blog.rac.me.uk/2016/05/04/techy-getting-curl-to-work-with-lets-encrypt-unable-to-get-local-issuer-certifi…