In both the Daikin and the Zonnepanelen app I have the same error.
I removed the zonnepanelen app but can’t reinstall.
Restarted Homey no solution.

This is the error while restarting the app (same for both apps)
How is the memory & storage in Homey?
Is one of them full maybe?
Maybe a PTP(Pull The Plug) helps.
ENOMEM means your Homey has run out of free RAM. You can’t solve that other than through a reboot or a PTP.