Google Drive external storage errs with Google Drive "shortcut"

[curiousercreative]

Steps to reproduce

1. Configure ownCloud with Google Drive external storage
2. Within associated Google Drive account, find a file, right-click and "add shortcut"
3. In ownCloud desktop client, ensure that your external storage is configured to sync

Expected behaviour

File should sync

Actual behaviour

503 Service unavailable (unable to open file)

Relevant Google Documentation and Background

• https://cloud.google.com/blog/products/g-suite/simplifying-google-drives-folder-structure-and-sharing-models
• https://gsuiteupdates.googleblog.com/2020/03/shortcuts-for-google-drive.html
• https://support.google.com/drive/thread/36734924?hl=en&msgid=37546605

Server configuration

Operating system: Ubuntu 18.04.4 LTS

Web server: Apache 2.4.29

Database:: MySQL 5.7.29-0ubuntu0.18.04.1

PHP version: v7.2.24-0ubuntu0.18.04.3

ownCloud version: 10.3.2

Updated from an older ownCloud or fresh install: fresh

Where did you install ownCloud from: official instructions

Signing status (ownCloud 9.0 and above):

No errors have been found.

Are you using external storage, if yes which one: Google Drive

Are you using encryption: no

Are you using an external user-backend, if yes which one: No

Client configuration

Operating system: macOS 10.14.6