You can't import a module with the same name in the current scope.

Erroneous code example:
```
IMPORT ecommerce-data.Product;
IMPORT ecommerce-data.Product; // error: an item named `Product` is already in scope
```

You can use aliases in order to fix this error. Example:
```
IMPORT ecommerce-data.Product;
IMPORT ecommerce-data.Product AS Product2;
```
