SharePoint Server Subscription Edition and SPFx form customizer

### Sample description

Hi!
Can be create SPFx form customizer in SharePoint Server Subsciption Edition?
I can't use the power apps solution, only the form customizer would be a good solution, but I can't activate it in the server version.
Please help.
Thanks!

### SPFx version

1.5.1

### Are you willing to help?

Yes