API: Fix reUploadAssets not working

[HugoGresse]

• reUploadAssets were not working on the API due to bad programmation

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit d66d70d):

• https://conferencecenterr--pr75-api-improvement-oeciat4l.web.app
• https://apiopenplanner--pr75-api-improvement-huvbe3u1.web.app

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