It is not an error, it is a warning.
You are running windows 11 on a device that does not meet the minimum specs.
[the CPU is not on the list of windows 11 supported processors, Windows Processor Requirements Windows 11 Supported AMD Processors | Microsoft Docs]
the warning is simply reminding you that features may not work properly on unsupported hardware.
there is always a risk in running pre-release versions there may be bugs and issues that could result in instability or data loss, even if the device does meet the minimum specs.
regular backups are essential when running any pre-release software.