An Error occured after Launch Magento Admin

[alexey_efimov]

I have done install of magento 2.3 and then pressed Launch Magento Admin button.

Then the browser displayed like this:

An error has happened during application run. See exception log for details.

How can I fix this?

What's the reason?

Please, help me.

[Robert_Rand]

I'd recommend checking the exception log to see what the specific error is. It should be in the  /var/log  folder

[Stuart M]

Per the last reply check the /var/log folder and find the log that matches the exception code given on that page.

Copy and past the first few lines over to us and we can help you find the problem unless you can self-resolve this.