Error ConnectorError: initialize connector without name

System Information
  • Strapi Version: 3.6.2
  • Operating System: Google Cloud
  • Database: Posgtgres
  • Node Version: 12
  • NPM Version: 6.12
  • Yarn Version:

After configuration on GCP (aligned with Google App Engine) I have an issue:
2021-05-12 21:50:26 default[20210512t233656] [2021-05-12T21:50:26.727Z] error ConnectorError: initialize connector without name
2021-05-12 21:50:26 default[20210512t233656] at requireConnector (/workspace/node_modules/strapi-database/lib/require-connector.js:12:11)
2021-05-12 21:50:26 default[20210512t233656] at Object.load (/workspace/node_modules/strapi-database/lib/connector-registry.js:20:38)
2021-05-12 21:50:26 default[20210512t233656] at DatabaseManager.initialize (/workspace/node_modules/strapi-database/lib/database-manager.js:37:21)
2021-05-12 21:50:26 default[20210512t233656] at Strapi.load (/workspace/node_modules/strapi/lib/Strapi.js:354:19)
2021-05-12 21:50:26 default[20210512t233656] at async Strapi.start (/workspace/node_modules/strapi/lib/Strapi.js:196:9)

Server responds with 500.

Do you have any tip how could it be resolved or where should I look for issue?