Magento broken when running bin/magento setup:upgrade

[deanchalk]

I have followed your instructions correctly, and everything installs perfectly. Magento runs as expected.

I then run bin/magento setup:upgrade and magento blows up and needs to be re-installed.
The error I get in my browser is:

Fatal error: Uncaught RuntimeException: Can't create directory /var/www/html/generated/code/Magento/Framework/App/ResourceConnection/. Class Magento\Framework\App\ResourceConnection\Proxy generation error: The requested class did not generate properly, because the 'generated' directory permission is read-only. If --- after running the 'bin/magento setup:di:compile' CLI command when the 'generated' directory permission is set to write --- the requested class did not generate properly, then you must add the generated class object to the signature of the related construct method, only. in /var/www/html/vendor/magento/framework/Code/Generator.php:135 Stack trace: #0 /var/www/html/vendor/magento/framework/Code/Generator/Autoloader.php(35): Magento\Framework\Code\Generator->generateClass('Magento\\Framewo...') #1 [internal function]: Magento\Framework\Code\Generator\Autoloader->load('Magento\\Framewo...') #2 [internal function]: spl_autoload_call('Magento\\Framewo...') #3 /var/www/html/vendor/magento/framework/Code/Reader/Class in /var/www/html/vendor/magento/framework/Code/Generator.php on line 135

[asrashoaib]

How did you run bin/magento command ?? Mine has not generated bin/magento directory while follwoing instructions