Custom service v4 not working

I don’t know if this can help, but I’m currently creating my Controllers and Services this way:

My code:

const modelUid = "api::company.company";
module.exports = createCoreService(modelUid, ({ strapi }) => ({
 async doSomething(){ ... }
} ) ); 

OP code:

module.exports = createCoreService(‘api::blog.blog’), ({ strapi }) => ({
 async doSomething() { ... }
} )

see the diference in createCoreService? My function still open until the final lines

REF: Services | Strapi Documentation