Import project to subgroup

Summary

Hi,

i have a parent group with subgroups. I will import same projects from BitBucket and use the import functionality.
I would select the subgroup as target to import a project. But if i click on import, i receive an error Something went wrong on our end.. So i must import the project to the parent group and move it manually to the subgroup.

Steps to reproduce

1. Create a group.
2. Create a subgroup in this group.
3. Click New project in subgroup
4. Import project from Bitbucket
5. Choose a project, modify the path to import to the subgroup.
6. Click import.
7. Error occurs on top of window.

What is the expected correct behavior?

The project should be imported to the selected subgroup.

Output of checks

This bug happens on GitLab.com