How do I fix the 'Authentication Failed' error when logging into Free Fire with Facebook?

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How do I fix the 'Authentication Failed' error when logging into Free Fire with Facebook?
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The 'Authentication Failed' error typically indicates a problem with verifying your Facebook account within Free Fire. Clear the Free Fire app's cache and data (Settings > Apps > Free Fire > Storage > Clear Cache & Clear Data), then restart your device. Re-open Free Fire and try logging in with Facebook again. Ensure your Facebook app is also updated.