Haven't updated in years

I am using an older version of 5.5.2.1
My server was changed and the site is no longer working,
here is the site http://duboishs.com/

here is an error logs from today. I’m not tech savvy and don’t understand.

Can anyone help me please, thank you.

[14-Oct-2022 17:07:35 UTC] PHP Fatal error: Uncaught Error: Non-static method Loader::database() cannot be called statically in /home/duboishs/public_html/updates/concrete5.5.2.1/concrete/dispatcher.php:29
Stack trace:
#0 /home/duboishs/public_html/concrete/startup/updated_core_check.php(6): require()
#1 /home/duboishs/public_html/concrete/dispatcher.php(14): require(’/home/duboishs/…’)
#2 /home/duboishs/public_html/index.php(2): require(’/home/duboishs/…’)
#3 {main}
thrown in /home/duboishs/public_html/updates/concrete5.5.2.1/concrete/dispatcher.php on line 29
[14-Oct-2022 17:07:57 UTC] PHP Fatal error: Uncaught Error: Non-static method Loader::database() cannot be called statically in /home/duboishs/public_html/updates/concrete5.5.2.1/concrete/dispatcher.php:29
Stack trace:
#0 /home/duboishs/public_html/concrete/startup/updated_core_check.php(6): require()
#1 /home/duboishs/public_html/concrete/dispatcher.php(14): require(’/home/duboishs/…’)
#2 /home/duboishs/public_html/index.php(2): require(’/home/duboishs/…’)
#3 {main}
thrown in /home/duboishs/public_html/updates/concrete5.5.2.1/concrete/dispatcher.php on line 29
[14-Oct-2022 17:08:27 UTC] PHP Fatal error: Uncaught Error: Non-static method Loader::database() cannot be called statically in /home/duboishs/public_html/updates/concrete5.5.2.1/concrete/dispatcher.php:29
Stack trace:
#0 /home/duboishs/public_html/concrete/startup/updated_core_check.php(6): require()
#1 /home/duboishs/public_html/concrete/dispatcher.php(14): require(’/home/duboishs/…’)
#2 /home/duboishs/public_html/index.php(2): require(’/home/duboishs/…’)
#3 {main}
thrown in /home/duboishs/public_html/updates/concrete5.5.2.1/concrete/dispatcher.php on line 29
[14-Oct-2022 17:08:57 UTC] PHP Fatal error: Uncaught Error: Non-static method Loader::database() cannot be called statically in /home/duboishs/public_html/updates/concrete5.5.2.1/concrete/dispatcher.php:29
Stack trace:
#0 /home/duboishs/public_html/concrete/startup/updated_core_check.php(6): require()
#1 /home/duboishs/public_html/concrete/dispatcher.php(14): require(’/home/duboishs/…’)
#2 /home/duboishs/public_html/index.php(2): require(’/home/duboishs/…’)
#3 {main}
thrown in /home/duboishs/public_html/updates/concrete5.5.2.1/concrete/dispatcher.php on line 29
[14-Oct-2022 17:11:49 UTC] PHP Fatal error: Uncaught Error: Non-static method Loader::database() cannot be called statically in /home/duboishs/public_html/updates/concrete5.5.2.1/concrete/dispatcher.php:29
Stack trace:
#0 /home/duboishs/public_html/concrete/startup/updated_core_check.php(6): require()
#1 /home/duboishs/public_html/concrete/dispatcher.php(14): require(’/home/duboishs/…’)
#2 /home/duboishs/public_html/index.php(2): require(’/home/duboishs/…’)
#3 {main}
thrown in /home/duboishs/public_html/updates/concrete5.5.2.1/concrete/dispatcher.php on line 29

It looks like either your PHP or MySQL version changed and your core version isn’t compatible. I would bet that PHP got updated. Can you change it back to 5.x and upgrade the site?

Thank You! Ill see if that works, I appreciate that. Have a great day!

Yes you are right it changed to 8.0
That worked thank you so much.