Trying to delete an API from WSO2 API Manager and end up seeing this error – Cannot remove API as active subscriptions exist? Well, the error message clearly indicates that there are some users subscribed to the API and it’s not possible to delete the same. It means, before you…

Do you create office documents that will be shared with others? Then appropriate attribution and correct author information are important.  Recently, I happened to work on a document collaboratively, but my comments were tagged with username as ‘Microsoft’ which I thought would make no sense to other collaborators. In this…

In continuation to my article on WSO2 installation and configuration, here’s another issue that popped up after changing the hostname in the repository/conf/deployment.toml file. The error “Registered callback does not match with the provided URL” occurs while accessing the login page of the publisher and developer portal. If you are…

Is there a way to change the product sorting in WooCommerce? Currently, the products are displayed in alphabetical order on the product category pages. – This was the question asked by one of my clients. Well, the answer is simple – Of course, it can be changed and here’s how…

Mistyping a command is common; for example, typing ‘sl‘ instead of ‘ls‘ is very common. But this mistyping resulted in a funny output on my colleague’s terminal and what I heard from him was a train running on the terminal. Seriously, he asked me to try out the command on…

DST Root CA X3 certificate expired on September 30th, 2021 causing many devices on the internet with an Invalid Certificate error, including the websites and services using the Let’s Encrypt certificates. But you know what I was not even aware of this certificate expiry until one of my clients sent…

In this tutorial, we will discuss how to fix the communication link failure exception that occurs while integrating WSO2 with the MySQL database. If you are new to WSO2, then quickly jump to this guide on the installation and configuration of WSO2 on CentOS. Also if you are using WSO2…

I have installed and configured SoftHSM successfully on CentOS. In order to check if I can communicate with SoftHSM programmatically, I wrote a Java program that interacts with the soft token and performs encryption and decryption of an input string.  However, the program was able to encrypt the input successfully…

In continuation to our previous article on “Installation of WSO2 API Manager on CentOS“, today we will discuss configuring WSO2 with MySQL database. By default, WSO2 API Manager uses the embedded H2 Database for storing data for the functioning of the gateway. However, it’s advised to integrate it with the…

Question: Hi, I was trying to rehash the certificates on CentOS 7 using c_rehash. However, I see the error c_rehash command not found. $ c_rehash $HOME/.certs/ -bash: c_rehash: command not found I thought the command should be installed as part of OpenSSL and OpenSSL development packages, but that’s not the…

WSO2 API Manager is an Open Source-based API Gateway that allows the development teams to deploy and monitor APIs and as well provides a facility for the consumers to subscribe to APIs and consume to meet their needs. Why would someone need an API Manager?  Well, that’s a good question….

After the development of a web application for a client, I had requested our security experts group to carry out the VAPT (Vulnerability Assessment and Penetration Testing). Well, it’s the process that should be carried out before launching any system to make sure there’s no vulnerability exposed for the attackers…

I have been using Preloader WordPress plugin almost in all of my client websites. But the plugin ended up throwing “Uncaught TypeError: a.indexOf is not a function” error when W3TotalCache plugin was enabled. The error occurred in preloader-script.js file which had the following code. jQuery(window).load(function() { jQuery(‘#wptime-plugin-preloader’).delay(250).fadeOut(“slow”); setTimeout(wptime_plugin_remove_preloader, 2000); function…

Question: Why does SSH connection takes long time to connect to a machine in the same network? The password prompt takes long time to appear. However, I’m able to connect to other machines on the same network faster. What could be the reason? –  Gouri debug1: Authentications that can continue:…

“SMTP ERROR: Failed to connect to server: php_network_getaddresses: getaddrinfo failed”. Well, this is how my week started. One of my client’s website running WordPress and Easy WP SMTP plugin failed to send mails. Though I rechecked all the mail configurations, test mails via Easy WP SMTP failed with the above…

Divi visual builder is not loading? There are plenty of reasons for this and more often there are no errors to help you solve the issue. However, there are few things you can try out and see if the problem goes off. Change PHP settings The first thing you can…

In this tutorial, I’ll be explaining how to recover deleted files in Git. Let’s assume a few scenarios and see how Git file recovering commands are working. I deleted a file but not staged for commit Ok, you realized your mistake as soon as you deleted the file, then it’s…

One way of duplicating a repository is by forking it -to do that, browse to the repository you wish to duplicate, and click the “Fork” button. The other way to duplicate a Git repository is without forking it by executing a mirror-push command to the newly created repository. In this…

WooCommerce REST API can be used to add, delete, and update products, customers, coupons, orders, etc. In order to develop a React Native based Android application, I generated a REST API key in WooCommerce and used Postman (the API client) to test if the API is working properly. However, the…