flowise local server setup error

I am trying to install local server for Flowise but running into the following issue:

C:\flowise\Flowise-main\Flowise-main>yarn install
yarn install v1.22.22
info No lockfile found.
[1/5] Validating package.json...
error flowise@3.0.11: The engine "node" is incompatible with this module. Expected version ">=18.15.0 <19.0.0 || ^20". Got "24.11.1"
warning flowise@3.0.11: The engine "pnpm" appears to be invalid.
error Found incompatible module.
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.

Please help!