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Loading websites over the Secure Hypertext Transfer Protocol (HTTPS) is critical to network security. However, if we do not install the Secure Sockets Layer (SSL) certificate correctly, we may encounter many errors such as NET::ERR_CERT_COM...

When browsing the web, the last thing we want to see is an error message. For macOS users, one of the problems you may encounter is the “Safari Can’t Establish a Secure Connection to the Server” error. While this error can seem daunti...

This article shares an SEO problem, soft 404. A status code we often see on websites is 404. Whether we develop a website or not, this is a problem we have to face. What is a soft 404? Before talking about soft 404, we must first understand...

Sometimes even after you have an SSL certificate installed on your website, your website’s users may encounter NET::ERR_CERT_AUTHORITY_INVALID an invalid certificate authority error. Despite the intimidating name, the invalid certificate...

Nothing is more frustrating than receiving an error message that brings our work to a screeching halt—especially when security is involved. Seeing a “This Site Can’t Provide a Secure Connection” notification can be confusing and ala...

In this article, we will continue with the article on how OAuth2.0 issues access tokens and introduce several related knowledge points involving client credentials: Obtain end-user authorization Authorization Response Error Responses and Er...

In the previous article, we introduced that OAuth2.0 is an authorization mechanism whose main purpose is to issue tokens between websites or applications that want to share resources. Before starting this article, we assume that you have un...

When I first came into contact with OAuth2.0, I often confused it with SSO single sign-on. Later, due to work needs, I implemented a set of SSO in the project. Through my gradual understanding of SSO, I also distinguished it from OAuth2.0....

HTTP2 was officially released in 2015. If your website is still using HTTP/1.1, you may be out of date. Don't worry, here we will see how to use Nginx to upgrade your website to HTTP2. Install Nginx I feel that this column is redundant. Sin...

When we use a hook after a condition that may return a value, we get the error "Rendered fewer hooks than expected. This may be caused by an accidental early return statement". To fix this error, you need to move all React hooks to any condition that ...

When we use the useState hook conditionally or after a condition that may return a value, we get the error "React hook 'useState' is called conditionally". To fix the error, move all React hooks above any condition that may return a value....

Use non-null assertions or type assertions to resolve the React.js error "Argument of type 'HTMLElement | null' is not assignable to parameter of type 'Element | DocumentFragment'", for example `const root = createRoot(rootElement!)`....

When we forget to close a tag in the JSX code, the React.js error “Expected corresponding JSX closing tag” appears. To fix the error, you need to use self-closing tags, such as and ensure the order of opening and closing tags in the JSX code....

There are several reasons for the error “createRoot(...): Target container is not a DOM element” in React: Passing an incorrect id to the document.getElementById() method....

To resolve the error "Module not found: Error: Can't resolve 'react-bootstrap'", make sure to install the react-bootstrap package by opening a terminal in the root directory of the project and running the command `npm install react-bootstrap bootstrap...