I tried forcefully installing it:
PS C:\laragon\www\elrs-online-help\wp-content\plugins\jsforwp-example-blocks> npm install –save-dev –unsafe-perm node-sass
npm WARN deprecated firstname.lastname@example.org: request has been deprecated, see https://github.com/request/request/issues/3142
npm WARN deprecated email@example.com: this library is no longer supported
Errors are gone now, but not sure if that was the right move since it’s mentioning something being deprecated. I tried running run dev and made some small changes like editing the description of the block but nothing changes on the front-end.