Math captcha ERROR: Captcha time expired.

I don’t know what happened. It was working fine before and I don’t know I have this error now. I didn’t add or edit any plugins.

I checked out other questions that are similar and I can’t find any solutions that would work. I don’t have caching plugins. I changed the Captcha time number to 6000. I cleared my browser’s cache. I don’t think it was any of the plugins because it was working fine and I didn’t add or edit any plugins.

What can I do to fix that?

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