Panels only generating 1w

Came back from holiday last weekend to find my panels are only generating 1w of solar even when it’s sunny outside. Instal company no idea what’s going on and now a roof inspection required! Lost a whole week work of generation :-( . Anyone experienced this?

What kit have you got. Please post some images of the energy flow graphs from the portal on the day in question

A full moon gives 1W on our 4.4kW system!