I am currently facing a technical issue while installing Magento 2.x, specifically encountering a "Database Connection Error" during the installation process. I would appreciate any assistance or insights from experienced users in resolving this problem.
Please share more details.
Check if mysql and elasticsearch are UP and running.
check if the configuration are correct in core_config_data table.
I had the same problem, thanks to @gaurav_harsh1 for the solution).