Slim Application Error

The application could not run because of the following error:

Details

Trace

#0 /www/htdocs/w0184d7d/api.owlaw.de/vendors/slimjwt/src/JwtAuthentication.php(226): Closure->{closure}(Object(Zend\Diactoros\Response), Array)
#1 /www/htdocs/w0184d7d/api.owlaw.de/vendors/slimjwt/src/JwtAuthentication.php(145): Tuupola\Middleware\JwtAuthentication->processError(Object(Zend\Diactoros\Response), Array)
#2 /www/htdocs/w0184d7d/api.owlaw.de/vendors/slimjwt/vendor/tuupola/callable-handler/src/DoublePassTrait.php(47): Tuupola\Middleware\JwtAuthentication->process(Object(Slim\Http\Request), Object(Tuupola\Middleware\CallableHandler))
#3 [internal function]: Tuupola\Middleware\JwtAuthentication->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Slim\App))
#4 /www/htdocs/w0184d7d/api.owlaw.de/vendors/phpslim/vendor/slim/slim/Slim/DeferredCallable.php(43): call_user_func_array(Object(Tuupola\Middleware\JwtAuthentication), Array)
#5 [internal function]: Slim\DeferredCallable->__invoke(Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Slim\App))
#6 /www/htdocs/w0184d7d/api.owlaw.de/vendors/phpslim/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(70): call_user_func(Object(Slim\DeferredCallable), Object(Slim\Http\Request), Object(Slim\Http\Response), Object(Slim\App))
#7 /www/htdocs/w0184d7d/api.owlaw.de/vendors/phpslim/vendor/slim/slim/Slim/MiddlewareAwareTrait.php(117): Slim\App->Slim\{closure}(Object(Slim\Http\Request), Object(Slim\Http\Response))
#8 /www/htdocs/w0184d7d/api.owlaw.de/vendors/phpslim/vendor/slim/slim/Slim/App.php(406): Slim\App->callMiddlewareStack(Object(Slim\Http\Request), Object(Slim\Http\Response))
#9 /www/htdocs/w0184d7d/api.owlaw.de/vendors/phpslim/vendor/slim/slim/Slim/App.php(314): Slim\App->process(Object(Slim\Http\Request), Object(Slim\Http\Response))
#10 /www/htdocs/w0184d7d/api.owlaw.de/index.php(304): Slim\App->run()
#11 {main}