( ! ) Deprecated: Predis\Client::createPipeline(): Implicitly marking parameter $options as nullable is deprecated, the explicit nullable type must be used instead in /pub/lin/umbc/vendor/predis/predis/src/Client.php on line 429
Call Stack
#	Time	Memory	Function	Location
1	0.0020	429368	{main}( )	.../session.php:0
2	0.0164	435240	Composer\Autoload\ClassLoader->loadClass( $class = 'Predis\\Client' )	.../session.php:30
3	0.0173	435336	Composer\Autoload\includeFile( $file = '/pub/lin/umbc/vendor/composer/../predis/predis/src/Client.php' )	.../ClassLoader.php:322

( ! ) Deprecated: Predis\Client::createTransaction(): Implicitly marking parameter $options as nullable is deprecated, the explicit nullable type must be used instead in /pub/lin/umbc/vendor/predis/predis/src/Client.php on line 472
Call Stack
#	Time	Memory	Function	Location
1	0.0020	429368	{main}( )	.../session.php:0
2	0.0164	435240	Composer\Autoload\ClassLoader->loadClass( $class = 'Predis\\Client' )	.../session.php:30
3	0.0173	435336	Composer\Autoload\includeFile( $file = '/pub/lin/umbc/vendor/composer/../predis/predis/src/Client.php' )	.../ClassLoader.php:322

( ! ) Deprecated: Predis\Client::createPubSub(): Implicitly marking parameter $options as nullable is deprecated, the explicit nullable type must be used instead in /pub/lin/umbc/vendor/predis/predis/src/Client.php on line 504
Call Stack
#	Time	Memory	Function	Location
1	0.0020	429368	{main}( )	.../session.php:0
2	0.0164	435240	Composer\Autoload\ClassLoader->loadClass( $class = 'Predis\\Client' )	.../session.php:30
3	0.0173	435336	Composer\Autoload\includeFile( $file = '/pub/lin/umbc/vendor/composer/../predis/predis/src/Client.php' )	.../ClassLoader.php:322

( ! ) Deprecated: Predis\Profile\RedisProfile::setProcessor(): Implicitly marking parameter $processor as nullable is deprecated, the explicit nullable type must be used instead in /pub/lin/umbc/vendor/predis/predis/src/Profile/RedisProfile.php on line 124
Call Stack
#	Time	Memory	Function	Location
1	0.0020	429368	{main}( )	.../session.php:0
2	0.0191	439720	Predis\Client->__construct( $parameters = ???, $options = ??? )	.../session.php:30
3	0.0255	509064	Predis\Configuration\Options->__get( $option = 'profile' )	.../Client.php:57
4	0.0255	509064	Predis\Configuration\Options->getDefault( $option = 'profile' )	.../Options.php:117
5	0.0258	509200	Predis\Configuration\ProfileOption->getDefault( $options = class Predis\Configuration\Options { protected $input = []; protected $options = ['connections' => class Predis\Connection\Factory { ... }]; protected $handlers = ['cluster' => 'Predis\\Configuration\\ClusterOption', 'connections' => 'Predis\\Configuration\\ConnectionFactoryOption', 'exceptions' => 'Predis\\Configuration\\ExceptionsOption', 'prefix' => 'Predis\\Configuration\\PrefixOption', 'profile' => 'Predis\\Configuration\\ProfileOption', 'replication' => 'Predis\\Configuration\\ReplicationOption'] } )	.../Options.php:64
6	0.0264	509296	Predis\Profile\Factory::getDefault( )	.../ProfileOption.php:64
7	0.0264	509296	Predis\Profile\Factory::get( $version = 'default' )	.../Factory.php:50
8	0.0264	509368	Composer\Autoload\ClassLoader->loadClass( $class = 'Predis\\Profile\\RedisVersion320' )	.../Factory.php:99
9	0.0264	509480	Composer\Autoload\includeFile( $file = '/pub/lin/umbc/vendor/composer/../predis/predis/src/Profile/RedisVersion320.php' )	.../ClassLoader.php:322
10	0.0269	509856	include( '/pub/lin/umbc/vendor/predis/predis/src/Profile/RedisVersion320.php )	.../ClassLoader.php:444
11	0.0270	509856	Composer\Autoload\ClassLoader->loadClass( $class = 'Predis\\Profile\\RedisProfile' )	.../RedisVersion320.php:19
12	0.0270	509968	Composer\Autoload\includeFile( $file = '/pub/lin/umbc/vendor/composer/../predis/predis/src/Profile/RedisProfile.php' )	.../ClassLoader.php:322

Since a lot of people liked my comment yesterday, here's a friendly Admin guide™ on how to make a milkshake at DHall, in an itemized list. 1. Pick you choice of ice cream and milk (after much trial and error, I can assure you there is a best choice. it's 1/3 a cup of chocolate milk and 4 heaping scoops of vanilla ice cream.) 2. Once your cup is filled, go to the station. To get the machine to start spinning, you need to slide the cup into the little metal tab (right behind the stirrer stick and about at the top). 3. Once you slide it into there, it'll start spinning automatically. The switch on top regulates the speed. All the way on the left is the slowest, right is the fastest. 4. Spin to your preferred thickness. Voila. 5. Enjoy. My combo tastes like a Wendy's frosty! Hope this was helpful!