Just checked in linkedin profile today. And found my website thumbnail missing again.
Then double checked my gatsby source. That's fine.
I use linkedin link inspector: https://www.linkedin.com/post-inspector/inspect/
to check my website again : https://www.linkedin.com/post-inspector/inspect/https:%2F%2Fccapeng.github.io
I did get some warning, but my profile thumbnail shown again.
