There is a possibility of network failure and trouble of Twitter image server.
Connected by Wi-Fi
Please connect with a carrier line (4G etc.) and try to see if it is displayed. If so, your router’s DNS cache may be out of date. If you’re at home, try restarting your Wi-Fi router.
Not displayed even in 4G
Try to see the image in another “unofficial Twitter app”. If not, it is due to a Twitter image server failure.
Everyday Programmer, Dad, husband, CTO/CEO. Created Tweecha, Txiicha, Calculacha, Rolling Jewels, Rendamachine, Quick Countre.