All methods failed to trigger successfully except login


hi guys,
I installed grafana on both the cloud server and the internal server,grafana in private server not working properly except logging in,all api alert fetch to failed except login
I tried changing the grafana version, turning off the server firewall, and adding the server port, but I couldn’t successfully circumvent this problem. However, it was normal on the cloud server, so it was very strange.

You need to provide reproducible example first.