Err_connection_timed_out is an error message that appears when your web browser cannot establish a connection with a website you want to navigate within a certain time limit.
When you visit a website, the browser usually gives you around 30 seconds before disconnecting. This is the default value of maximum_exection_time in PHP. If the loading process takes too long to exceed that time, the notification “err_connection_timed_out” will appear, which indicates a problem with your local system, although it’s not always the case.
The error message displayed with this code usually contains different information depending on the browser and operating system.