LoveLace cards disappear after 1sec when page is loaded

Hello everyone,

i’m building a system tab with al the system values like ram, cpu temp etc. I addes a couple of sensors and it all worked then i added a couple of counters like the picture. after i rebooted for the second time my cards never came back. I deleted them from my yaml file but the cards still won’t show up. if i refresh the page they appear for less then a second and then they are gone.

someone that can help me with this?
thanks in advanceScreenshot_1