My Page Settings Not Loading Properly (upgrade To 4.6.1)

Since upgrading to version 4.6 last week, (a bit late, I know) I'm unable to access the full "PHOTO SETTINGS" page so that I can update my s3 bucket information (or even temporarily turn it off) 

attached is screenshot of my situation - - - 

My error logs show a recurring error as follows: 

[21-Oct-2024 23:17:55 America/Chicago] PHP Fatal error:  Uncaught Error: Call to undefined function isSuperUser() in /home/dwdmaster/clients.donwrightdesigns.com/sy-inc/page_display.php:215
Stack trace:
#0 /home/dwdmaster/clients.donwrightdesigns.com/sy-inc/main_index_include.php(25): require()
#1 /home/dwdmaster/clients.donwrightdesigns.com/weddings-112/britney-chris-engaged-rutledge-falls/index.php(4): include('/home/dwdmaster...')
#2 {main}
  thrown in /home/dwdmaster/clients.donwrightdesigns.com/sy-inc/page_display.php on line 215

Please advise . . . . . guessing I need to revert back to old version in order to fix this quickly? 

Fixed - it seems that there was an error related to ZIP filenaming - specifically "generaterandomnumber" - - - updated the code as a bandaid and now I can see my full photo settings. . . . 

Still need a more permanent fix - hoping this will help me REVERT my amazon s3 settings so that all the photos from my no longer existent bucket can be pulled from host instead. 

#2 {main} 
thrown in /home/dwdmaster/clients.donwrightdesigns.com/sy-inc/page_display.php on line 215

Still can't see any galleries due to this issue now . . . 

Apparently it's related to "isSuperUser" ?? I know I'm the only admin account . .. 

if(isSuperUser($date)) {
$date['passcode_photos'] = 0;
}