Why does the phone always prompt me with a webpage error?

I don't know what 'Missing Rabbit Online Reading' is. However, there were usually several reasons why the mobile phone prompted the webpage error: 1. Internet connection problem: If the phone cannot connect to the Internet or the Internet connection is unstable, it may prompt a webpage error. 2. Web browser problems: If you are using a different browser or a lower version of the browser, you may encounter web page errors. 3. Web problems: If the website you visit is under maintenance or is being updated, you may be prompted with a webpage error. 4. Mobile phone problems: If the phone's performance is poor or the browser plug-in is not installed correctly, it may prompt a webpage error. If you can provide more information, I will be able to provide a more accurate answer.