Utilize the Developer Tools in your browser to investigate and comprehend potential issues that may be occurring. It's possible that the element is being displayed with zero height or that there is a problem with the network connection. In Chrome, simply right click on the page, select "Inspect Element," and explore different tabs such as Elements, Network, Console, etc. Refresh the page while continuing to analyze the information provided by the Developer Tools panel. This method is the simplest and most effective way to gain insight into how your page is rendering, how resources are being loaded, and any potential issues that need to be addressed.
Other browsers like Safari, Edge, and Firefox also offer similar Developer Tools panels that can be activated to inspect your webpage. Personally, I find Chrome's tools to be particularly beneficial when debugging my webpages due to my familiarity with them.