Error in the generated proto file in grpc-web saying proto is not defined

Hello,
I am trying to run grpc-web with nuxtjs. The issue I am facing only happens when I run "`npm run dev`". Its not happening if I run "`npm run build` and `npm run start`" ie, production mode.

I have included all the files and when I run it and try to access the webpage, it shows this error "proto is not defined." This error is coming from the generated proto files by the protoc command.

Could anyone point me in the right direction to solve this issue?