Custom resolver is not working

[windcloudit]

I created a custom resolver but maybe it is not running now, This is my source code, you can see console.log('Run here') is not print out.
I try call by postman with header key is lang but it can not translate now, the default language alway be returned, could you help me check it. Thank you so much.

import { QueryResolver } from './resolvers/query.resolver';

I18nModule.forRootAsync({
      useFactory: () => {
        return {
          fallbackLanguage: 'en',
          parserOptions: {
            path: path.join(__dirname, '/i18n'),
          },
        };
      },
      parser: I18nJsonParser,
      resolvers: [{ use: QueryResolver, options: ['lang', 'locale', 'l'] }],
    })

import { ExecutionContext, Injectable } from '@nestjs/common';
import { I18nResolver, I18nResolverOptions } from 'nestjs-i18n';

@Injectable()
export class QueryResolver implements I18nResolver {
  constructor(@I18nResolverOptions() private keys: string[]) {}

  resolve(context: ExecutionContext) {
    let req: any;
    console.log('Run here'); // it is not run
    switch (context.getType() as string) {
      case 'http':
        req = context.switchToHttp().getRequest();
        break;
      case 'graphql':
        [, , { req }] = context.getArgs();
        break;
    }

    let lang: string;

    if (req) {
      for (const key of this.keys) {
        if (req.query != undefined && req.query[key] !== undefined) {
          lang = req.query[key];
          break;
        }
      }
    }

    return lang;
  }
}

[toonvanstrijp]

Heey @windcloudit I'm not sure what the issue is in your case. Maybe you misconfigured something else. I tried replicating your issue but it works just fine. See the attached zip with my project. (Run npm install and than npm run start:dev)

test.zip

[windcloudit]

Thank you so much.