Argument of type 'FastifyCookie' is not assignable to parameter of type 'FastifyPluginCallback<FastifyCookieOptions> | FastifyPluginAsync<FastifyCookieOptions> | Promise<...> | Promise<...>'. about nest

[Tony133]

Remove the fastify dependency (https://github.com/dev-mariana/nlw-expert-node/blob/main/package.json#L30) from the package.json file and the error disappears. If using the fastify platform, it is best to also remove the express platform (see here: https://github.com/dev-mariana/nlw-expert-node/blob/main/package.json#L27) and also the @types/express package (see here: https://github.com/dev-mariana/nlw-expert-node/blob/main/package.json#L39)

I also rewrite it in this topic, the error is due to the fact that you "directly" installed both fastify and @nestjs/platform-fastify dependencies is they are not the same version.

If you install the same version of fastify that is inside the @nestjs/platform-fastify package, the error disappears.

See this issue here for reference: #11265

[dev-mariana]

I tried it here and it solved my problem. Thanks!