Minecraft server has giant missing chunks?

I've had this server for at least 2 years now, and I've never had this problem. Today, my friend and I are playing on our server and we have several missing chunks that we can BOTH see. Any way this can be fixed without restarting the world?

Minecraft server has giant missing chunks

Added (1). It goes down to bedrock. It looks unnatural as hell.

Chris jr

This could be because of poor Wi-Fi. If you're talking about chunks that haven't loaded, walk over to where the missing chunks are. The chunks should appear.
Maybe that or a creeper came by and blew up.

Hannah