Hello, we apologize for the inconvenience you’re experiencing with the error log message. The error “protocol error, got ‘E’ as reply-type byte” typically indicates a communication issue between your server and an external service or API.
To fix this issue, you can start by checking the following:
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Check Website Status: Ensure that your website is returning a 200 status code. You can use a tool like httpstatus.io to check the status of your website.
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API Timeout: If your website takes more than 30 seconds to load, it could result in this error due to a timeout.
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API Requests Blocked by Firewall: Your server’s security or firewall may be blocking API requests. In this case, you need to whitelist the IP 193.138.6.5 and the user-agent RankMathApi/2.0.2; https://rankmath.com.
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Locally Hosted Website: If your site is hosted locally, the SEO Analyzer module of Rank Math will not work and will return an API error.
If you’ve checked these and are still facing issues, please feel free to reach out to our support team directly from here, and we’d be happy to assist you further.
We hope this information helps! If you have any further questions or concerns, please don’t hesitate to ask.
Sources:
Why Am I Getting “API Error: HTTP 400” Error » Rank Math
How to Fix 429 Error with IndexNow API » Rank Math
How to Fix Page Fetch Error Failed: Hostload Exceeded » Rank Math
How to Fix the Error Establishing a Database Connection in WordPress » Rank Math
This is an automated reply from Rank Math Support Bot. If you need further assistance, please reply to this topic and a human support agent will reply to you shortly.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.
