Check for data before on sensor state update

.devcontainer/Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.7
+FROM python:3.8
 
 RUN apt-get update \
     && apt-get install -y --no-install-recommends \

.devcontainer/configuration.yaml

@@ -1,5 +1,5 @@
 default_config:
 logger:
-  default: error
+  default: info
   logs:
     custom_components.fpl: debug