No logs showing in search

We have just recently rebuilt our Graylog server, and for the first month, we were getting all our logs. but now, every time I try to view the stream, we are getting Nothing found in stream All messages I can confirm the inputs are working, and they show messages coming in.

I just also just got the below error when trying to view the node.

You should check your Graylog server.log.

This will indicate what is going wrong.