Bug [MMO] External Accounts - Twitch

[Braaaig]

Linking a Twitch account errors?

ErrorException: [E_WARNING] Trying to access array offset on null
src/addons/MMO/ExternalAccounts/ConnectedAccount/ProviderData/TwitchProviderData.php:22

Stack Trace

#0 src/addons/MMO/ExternalAccounts/ConnectedAccount/ProviderData/TwitchProviderData.php(22): XF::handlePhpError(2, '[E_WARNING] Try...', '/home/test/p...', 22)
#1 src/XF/ConnectedAccount/ProviderData/AbstractProviderData.php(175): MMO\ExternalAccounts\ConnectedAccount\ProviderData\TwitchProviderData->getProviderKey()
#2 src/XF/ConnectedAccount/ProviderData/AbstractProviderData.php(196): XF\ConnectedAccount\ProviderData\AbstractProviderData->offsetGet('provider_key')
#3 src/XF/Repository/ConnectedAccountRepository.php(91): XF\ConnectedAccount\ProviderData\AbstractProviderData->__get('provider_key')
#4 src/XF/Pub/Controller/RegisterController.php(137): XF\Repository\ConnectedAccountRepository->getUserConnectedAccountFromProviderData(Object(MMO\ExternalAccounts\ConnectedAccount\ProviderData\TwitchProviderData))
#5 src/addons/SV/SignupAbuseBlocking/XF/Pub/Controller/Register.php(96): XF\Pub\Controller\RegisterController->actionConnectedAccount(Object(XF\Mvc\ParameterBag))
#6 src/XF/Mvc/Dispatcher.php(362): SV\SignupAbuseBlocking\XF\Pub\Controller\Register->actionConnectedAccount(Object(XF\Mvc\ParameterBag))
#7 src/XF/Mvc/Dispatcher.php(264): XF\Mvc\Dispatcher->dispatchClass('XF:Register', 'ConnectedAccoun...', Object(XF\Mvc\RouteMatch), Object(SV\SignupAbuseBlocking\XF\Pub\Controller\Register), Object(XF\Mvc\Reply\Reroute))
#8 src/XF/Mvc/Dispatcher.php(121): XF\Mvc\Dispatcher->dispatchFromMatch(Object(XF\Mvc\RouteMatch), Object(SV\SignupAbuseBlocking\XF\Pub\Controller\Register), Object(XF\Mvc\Reply\Reroute))
#9 src/XF/Mvc/Dispatcher.php(63): XF\Mvc\Dispatcher->dispatchLoop(Object(XF\Mvc\RouteMatch))
#10 src/XF/App.php(2813): XF\Mvc\Dispatcher->run()
#11 src/XF.php(802): XF\App->run()
#12 index.php(23): XF::runApp('XF\\Pub\\App')
#13 {main}