Its call next middle ware after url matched routePrefix, it is wrong, we don't get JSON file.

[rishabhchandel]

I fix it manually via edit node_modules/koa2-swagger-ui/lib/index.js
return function koaSwaggerUi(ctx, next) {
if (options.routePrefix === false || ctx.path === options.routePrefix) {
ctx.type = 'text/html';
ctx.body = index(options);
return; //add return here
}
return next();
};

[scttcper]

Adding a return there ends the koa request loop. Check that you don't have something setting the body to something else. Or put the middleware behind the router you use for everything else.

[rishabhchandel]

in my case, it is middle of public and secured router. it is not possible.