I updated the Admin plugin but after this my website doesn’t work anymore. Every page I try just throws a HTTP500 error. I managed to login using FTP and found an error log with a repeating error message:
0 /home/sjjpzzkw/public_html/system/src/Grav/Common/Plugins.php(42): Grav\Common\Plugins->loadPlugin('form')
#1 /home/sjjpzzkw/public_html/system/src/Grav/Common/Grav.php(423): Grav\Common\Plugins->__construct(Object(Grav\Common\Grav))
#2 /home/sjjpzzkw/public_html/vendor/pimple/pimple/src/Pimple/Container.php(118): Grav\Common\Grav->Grav\Common\{closure}(Object(Grav\Common\Grav))
#3 /home/sjjpzzkw/public_html/system/src/Grav/Common/Config/CompiledBlueprints.php(59): Pimple\Container->offsetGet('plugins')
#4 /home/sjjpzzkw/public_html/system/src/Grav/Common/Config/CompiledBlueprints.php(36): Grav\Common\Config\CompiledBlueprints->getTypes()
#5 /home/sjjpzzkw/public_html/system/src/Grav/Common/Config/CompiledBase.php(210): Grav\Common\Config\CompiledBlueprints->checksum()
#6 /home/sjjpzzkw/public_html/system/src/Grav in /home/sjjpzzkw/public_html/system/src/Grav/Common/Plugins.php on line 201
[25-Oct-2018 18:33:24 UTC] PHP Fatal error: Uncaught exception 'RuntimeException' with message 'Plugin 'form' class not found! Try reinstalling this plugin.' in /home/sjjpzzkw/public_html/system/src/Grav/Common/Plugins.php:201
What can I do to restore my website?
Why did this happen in the first place and should I avoid updating plugins in the future using the admin interface?