Why is Magento resourceconnection proxy does not exist?
Request fails to proceed properly, failing when it first references a just deleted class under generated/code/ (in this case Magento\\Framework\\App\\ResourceConnection\\Proxy, but it could be another one, problem is not really in that concrete class). Operation installs packages or not, it does not matter.
Is there a developer mode in Magento 2.3.5?
It worked for me on Magento 2.3.5-p1 (but should work in other versions). several classes in Magento2 are generated dynamically. Except you are in Developer mode, this does not happen automatically. To activate the developer Mode, you have to uncomment the Line in the beginning of your .htaccess file.
Why does Magento code generator generate non-existent classes?
Due to classmap check miss, Composer fallbacks to look for the file and class, and Magento code generator system generates non-existing classes, filling up again generated/code/. Request execution resumes and succeeds.
What was the problem with the Magento Stack Exchange?
For me the problem was that I missed the backslash when defining construct function arguments: SOLVED. Thanks for contributing an answer to Magento Stack Exchange! Please be sure to answer the question.
Why do I get error 500 after installing magento2?
I installed Magento2 successfully through the commandline, but when i try to access the website, i get a Server Error 500. The server runs on Ubuntu 14.04 I have no idea what is wrong, or what i am doing wrong.
When does autoload classmap do not exist in Magento?
Error occurs when autoload classmap is generated using existing generated/code/ files, and then files under generated/code/ are removed (See full explanation for further details). There are some ways to get rid of this behaviour. You can either (please note this options are mutually exclusive):