Port Forwarding Issue – Netgear Nighthawk
BackgroundThis morning when accessing YouTube from TV, there's no response. Found that the reason was internet access failure though WiFi connection was fine. Then some other things got wrong due…
Make Phone Calls on Mac
Issue: When trying to use FaceTime on iMac to make phone calls through iPhone, there is an issue to connect the iPhone with the Mac. Even though these 2 devices…
Google Site Kit All Blank in WP
Background: Google Site Kit plugin for WordPress is no doubt a comprehensive site performance plugin delivering promised all-in-one dashboard also with colourful layout. Issue: Using Google Site Kits plugin for…
SSL Key Ownership
Issue: After receiving renewal notice from Let's Encrypt for Jupyter server, go to the virtual machine hosting Jupyter and renew the key successfully. But cannot login to the jupyter notebook…
CSS List item style a) b)
Issue Default ordered list item style is decimal number, lower/upper alpha, lower/upper roman then followed by a dot. Thought it's easy to change the dot to something like a)…
MathJax Load Failed – WP Security Plugin
Issue After installing a WordPress security plugin call All-In-One WP Security, MathJax failed to load some JS including. Solution In the setting of the plugin, choose the tab Additional Firewall…
CentOS VM Client Can’t Boot Up
Issue VirtualBox client CentOS can't boot up with error message: [FAILED] Failed to start Virtual Machine and Container Registration Service. [FAILED] Failed to start Login Service. Solution Disable SELINUX config…
Jupyter Notebook on Boot Automatically
Issue After making the file to create a system service for jupyter notebook running on CentOS so as to start jupyter server automatically during system start up, the service successfully…
PHP 7
PHP 7 & Related Issues
Background After installing a WordPress plugin - WP Health, it's reminded that PHP5 had no longer been supported since late 2018, thus there may be risk in all WordPress websites.…
Centos7 Virtualmin Upgrade PHP7 MariaDB
This is my first blog after upgrading to WordPress 5.1 from ver.4.8. Yes, I never tried 5.0 as it's always risky to have a major upgrade to ver. x.0. The…