Fatal error: Uncaught Error: Call to undefined function Magento\Framework\Filesystem\Directory\mb_strpos() in /home/shoposho/public_html/vendor/magento/framework/Filesystem/Directory/PathValidator.php:60
Stack trace:
#0 /home/shoposho/public_html/vendor/magento/framework/Filesystem/Directory/Read.php(82): Magento\Framework\Filesystem\Directory\PathValidator->validate('/home/shoposho/...', '/var/.regenerat...', NULL, false)
#1 /home/shoposho/public_html/vendor/magento/framework/Filesystem/Directory/Read.php(210): Magento\Framework\Filesystem\Directory\Read->validatePath('/var/.regenerat...')
#2 /home/shoposho/public_html/vendor/magento/framework/Code/GeneratedFiles.php(123): Magento\Framework\Filesystem\Directory\Read->isExist('/var/.regenerat...')
#3 /home/shoposho/public_html/vendor/magento/framework/Code/GeneratedFiles.php(98): Magento\Framework\Code\GeneratedFiles->isCleanGeneratedFilesAllowed()
#4 /home/shoposho/public_html/vendor/magento/framework/App/ObjectManagerFactory.php(114): Magento\Framework\Code\GeneratedFil in /home/shoposho/public_html/vendor/magento/framework/Filesystem/Directory/PathValidator.php on line 60