Cannot remove panel :( please assist

Hi Grafana experts,
How are you?

Appreciate your kind help - I have built an awesome dashboard BUT have added in the end some test table and saved the dashboard.
Now I would like to remove that test table - but the trash icon not works and also and also the remove option in left navigation not works !

Can you please advise how to delete the non-used table?

Please see my answer here: Cannot remove existing panel from dashboard