Still not having found what is causing ths error… and tried some things. When I cast from Google Chrome and select my Nest hub Max and choose cast tab then this works but it’s unusable (to small and no touch possibilities).
If I use the automation blueprint to cast then I get a the red box with the dwains-flexbox-card error.
hi - i’m having these issues and i don’t use HACS. i’m using mini-graph-card on my dashboard.
the mini-graph-card-bundle.js is stored in the www directory and pointed to as local/mini-graph-card.js in resources. works fine in browser when used locally or via nabu.casa.
i also noticed that even the normal graphs are not loading - those just keep spinning - i think that none of the dynamically loading javascript is making it through to the cast - or something.
Very similar problem here trying to cast Apexcharts.
I managed to get the charts to cast after removing the HACS apexcharts install and installing manually as @Devqon mentioned above, the charts now cast but no data, just says ‘Loading’ in each chart.