Solid Amber light

System Information
        Manufacturer: Dell Inc.
        Product Name: PowerEdge R250
        Version: Not Specified
        Serial Number:  <Private data removed from public view. DELL-Admin>.
        UUID: 4c4c4544-0031-5110-8033-c2c04f383034
        Wake-up Type: Power Switch
        SKU Number: SKU=0A93;ModelName=PowerEdge R250
        Family: PowerEdge

I have two Dell PowerEdge R250 servers, one running Windows and the other Ubuntu, both connected to a UPS. Today, I noticed that the two servers displayed a solid amber light and was non-functional. After restarting the server, the issue was resolved. However, I want to identify the root cause of the problem whether it was related to the UPS or something else.

I attempted to retrieve logs to analyze the issue, but the logs only show entries after the restart. Could someone help me determine the cause of the problem and provide guidance on how to prevent it in the future? Thank you!