I reinstalled and along with a blank "My Account" page, I get the following error:

[25-Jun-2021 23:05:12 UTC] PHP Fatal error: Uncaught Error: Call to a member function isMobile() on null in /includes/templates/ntobs20/templates/tpl_account_default.php:16
Stack trace:
#0 /includes/templates/ntobs20/common/tpl_main_page.php(195): require()
#1 /index.php(94): require('/home/feadmin/p...')
#2 {main}
thrown in /includes/templates/ntobs20/templates/tpl_account_default.php on line 16

[25-Jun-2021 23:05:12 UTC] Request URI: /index.php?main_page=account, IP address: xxxxxx
--> PHP Fatal error: Uncaught Error: Call to a member function isMobile() on null in /includes/templates/ntobs20/templates/tpl_account_default.php:16
Stack trace:
#0 /includes/templates/ntobs20/common/tpl_main_page.php(195): require()
#1 /index.php(94): require('/home/...')
#2 {main}
thrown in /includes/templates/ntobs20/templates/tpl_account_default.php on line 16.