Slim Error with no Caller?

I keep getting this error in my logs, but it doesn’t show where the call came from:

[29-Sep-2020 17:10:54 UTC] PHP Fatal error: Uncaught Slim\Exception\NotFoundException in /home/apimain/public_html/vendor/slim/slim/Slim/App.php:514
Stack trace:
#0 /home/apimain/public_html/vendor/tuupola/callable-handler/src/CallableHandler.php(51): Slim\App->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response))
#1 /home/apimain/public_html/vendor/tuupola/slim-basic-auth/src/HttpBasicAuthentication.php(158): Tuupola\Middleware\CallableHandler->handle(Object(Slim\Http\Request))
#2 /home/apimain/public_html/vendor/tuupola/callable-handler/src/DoublePassTrait.php(47): Tuupola\Middleware\HttpBasicAuthentication->process(Object(Slim\Http\Request), Object(Tuupola\Middleware\CallableHandler))
#3 [internal function]: Tuupola\Middleware\HttpBasicAuthentication->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Slim\App))
#4 /home/apimain/public_html/vendor/slim/slim/Slim/DeferredCallable.php(57): call_user_func_array(Object(Tuupola\Middleware\HttpBasicAuthentication), Array)
#5 [internal function]: Slim\DeferredCallable->__invoke(Obj in /home/apimain/public_html/vendor/slim/slim/Slim/App.php on line 514

What am I missing?

How am I supposed to be able to debug the issue when I dont even know where it is coming from? :0