how can I fix this error

[zaze]

hi I'm making a mod for 1.12.2 but I can't test it decos I get an error

error "OpenJDK 64-Bit Server VM warning: Using incremental CMS is deprecated and will likely be removed in a future release"

how can I fix it

[zaze]

I fixed it

[Ugdhar]

Just keep in mind that 1.12 is no longer supported on these forums because it is old.

If you need future help, update to a modern (preferrably the most recent) version.