I lost all my work :(

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I spent few hours adding and editing content in a new Figjam file on brave browser and now there is no content on the file.

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I spent few hours adding and editing content in a new Figjam file on brave browser. Finally I renamed the file from Draft/Untitled to Draft/. Then I wanted to share the file with someone and tried clicking on the share button. Since the share button kept waiting for a minute. I tried to refresh the browser and reload the file.
When the reloaded file came back, there was no content in the file.

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Help me recover my work!!!