Panics at table headers

[GiFRforever]

It seams to confuse table headers with real data.
Here are some examples of errors it gives and a screanshot of heatpump webpage:

panic: descriptor Desc{fqName: "luxtronik_chybova-pamet", help: "", constLabels: {}, variableLabels: [attr]} is invalid: "luxtronik_chybova-pamet" is not a valid metric name

panic: descriptor Desc{fqName: "luxtronik_doby-chodu", help: "", constLabels: {}, variableLabels: [attr]} is invalid: "luxtronik_doby-chodu" is not a valid metric name

panic: descriptor Desc{fqName: "luxtronik_status-zarizeni", help: "", constLabels: {}, variableLabels: [attr]} is invalid: "luxtronik_status-zarizeni" is not a valid metric name