quill error

gistfile1.txt

Slim Application Error
The application could not run because of the following error:

Details
Type: ErrorException
Code: 2
Message: DOMNode::appendChild(): Document Fragment is empty
File: /web/sites/quill.p3k.io/vendor/mf2/mf2/Mf2/Parser.php
Line: 856
Trace
#0 [internal function]: Slim\Slim::handleErrors(2, 'DOMNode::append...', '/web/sites/quil...', 856, Array)
#1 /web/sites/quill.p3k.io/vendor/mf2/mf2/Mf2/Parser.php(856): DOMNode->appendChild(Object(DOMDocumentFragment))
#2 /web/sites/quill.p3k.io/vendor/mf2/mf2/Mf2/Parser.php(1009): Mf2\Parser->parseE(Object(DOMElement))
#3 /web/sites/quill.p3k.io/vendor/mf2/mf2/Mf2/Parser.php(1376): Mf2\Parser->parseH(Object(DOMElement), false, Array)
#4 /web/sites/quill.p3k.io/vendor/mf2/mf2/Mf2/Parser.php(1370): Mf2\Parser->parse_recursive(Object(DOMElement), 1)
#5 /web/sites/quill.p3k.io/vendor/mf2/mf2/Mf2/Parser.php(1333): Mf2\Parser->parse_recursive(NULL)
#6 /web/sites/quill.p3k.io/vendor/indieauth/client/src/IndieAuth/Client.php(224): Mf2\Parser->parse()
#7 /web/sites/quill.p3k.io/vendor/indieauth/client/src/IndieAuth/Client.php(207): IndieAuth\Client::_extractEndpointFromHTML('...', 'https://matpack...', 'authorization_e...')
#8 /web/sites/quill.p3k.io/vendor/indieauth/client/src/IndieAuth/Client.php(271): IndieAuth\Client::_discoverEndpoint('https://matpack...', 'authorization_e...')
#9 /web/sites/quill.p3k.io/controllers/auth.php(35): IndieAuth\Client::discoverAuthorizationEndpoint('https://matpack...')
#10 [internal function]: {closure}()
#11 /web/sites/quill.p3k.io/vendor/slim/slim/Slim/Router.php(172): call_user_func_array(Object(Closure), Array)
#12 /web/sites/quill.p3k.io/vendor/slim/slim/Slim/Slim.php(1222): Slim\Router->dispatch(Object(Slim\Route))
#13 /web/sites/quill.p3k.io/vendor/slim/slim/Slim/Middleware/Flash.php(86): Slim\Slim->call()
#14 /web/sites/quill.p3k.io/vendor/slim/slim/Slim/Middleware/MethodOverride.php(94): Slim\Middleware\Flash->call()
#15 /web/sites/quill.p3k.io/vendor/slim/slim/Slim/Middleware/PrettyExceptions.php(67): Slim\Middleware\MethodOverride->call()
#16 /web/sites/quill.p3k.io/vendor/slim/slim/Slim/Slim.php(1174): Slim\Middleware\PrettyExceptions->call()
#17 /web/sites/quill.p3k.io/public/index.php(25): Slim\Slim->run()
#18 {main}