TypeError: Failed to resolve module specifier when using dynamic import

[Nashorn]

Example:
await import("some/path/to/aModule.js");

Results in error:
TypeError: Failed to resolve module specifier..

Solution:
A module must be either a full URL (including a protocol), an absolute path (starting with /), or a relative path (starting with ./ or ../). ES6 import() works just the same as the css @import rule when it comes to relative path traversal.