`DATABASE_URL` invalid while `npx prisma migrate ...`??

Environment variables loaded from .env
Prisma schema loaded from schema.prisma
Datasource "db": PostgreSQL database

Error: P1013: The provided database string is invalid. The scheme is not recognized in database URL. Please refer to the documentation in https://www.prisma.io/docs/reference/database-reference/connection-urls for constructing a correct connection string. 
In some cases, certain characters must be escaped. Please check 
the string for any illegal characters.

Environment variables loaded from .env
Prisma schema loaded from schema.prisma
Datasource "db": PostgreSQL database

Error: P1013: The provided database string is invalid. The scheme is not recognized in database URL. Please refer to the documentation in https://www.prisma.io/docs/reference/database-reference/connection-urls for constructing a correct connection string. 
In some cases, certain characters must be escaped. Please check 
the string for any illegal characters.