Vendor/Autoload doesn't auto install
nullminer please let us know which step of the installation you are having trouble with, which commands you ran, which error you get if any, and maybe some command output.
clarkwinkelmann When i used composer, it didnt generate the directory and file even tho i used the right command
Edit: it said something about not enough ram
nullminer can you share what you have tried to increase memory ?
Can you share the exact error you are getting ?
i can't increase memory, as i use shared hosting. using pockethold doesnt work as pockethold gets stuck forever
nullminer the logical solution would be to change/upgrade hosting then. Your current one clearly doesn't fit Flarum requirements.
There are multiple threads with hosting recommendations on this forum you should be able to find via search.