If you're having trouble uploading a GIF, it could be because the file size is larger than 10MB. Additionally, the way you created the GIF might not be suitable for the web, meaning it may not work properly on all browsers or lack a loop function. To fix this, you can optimize the GIF using a tool like Ezgif (https://ezgif.com/optimize). By optimizing it, you can ensure that the GIF will work as intended.
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Ezgif, will fix it, plus optimize it.