“SELENIUM_UNREACHABLE_ERROR - Couldn’t connect to Selenium server at line 1” message appears while running recording script.

Hi. You need to make sure your java jre is 1.8 v8
Please download it from here
Make sure you download 1.8 and not 11

Update!. You can now install java from the following link

2 minutes install

Getting the same error with openjdk version “1.8.0_252”

Maybe you need to define the java home setting inside your environment variables
Have a look at this (read the part regarding setting env)

Did this help @andre_novais