Magento 2.3 - After migration from 1.9 to 2.3 vendor/magento files missing

[Aveeva]

After migration from Magento 1.9.2.3 to Magento 2.3.4 most of the files missing from vendor/magento.

But all the files located under app/code/Magento

Is this safe, shall i run my Magento 2.3.4 in this situation?

What about my future version upgrade?

[naheedmire215e]

Hello,
I will suggest you try the below steps:
1. Rename vendor folder like rename it to vendor_old
2. Replace composer.json with your desired Magento version composer.json in the root.
3. Also, run the composer update command

[socialshar990d]

i want to develop my eCommerce website. can i develop on magento.  kindly check meracoaching

[amitsamsukha]

@Aveeva 

you have migrated to Magento 2 GIT Version 

GIT version has Magento files inside app/code folder 

it's not recommended for production, GIT version installation is recommended for development and contributions. 

you can update to composer installation with : 

Step1. backup your app/code/env.php 

Step2. install Magento via the following methods

Step3. Replace your current app/code/env.php with the backup and

Step4. Update the URLs in core_config_data ( if required ) 

[Aveeva]

@amitsamsukha Last 5 months my website running like this, there is no issue, where will i get an issue in the future? Version upgrade no issue right?

[gaurav_harsh1]

Hello @Aveeva 

The GIT version Magento is used for Contributors who contribute core fixes so they can push their fix in app/code.

Here is the difference :

https://devdocs.magento.com/mftf/docs/guides/git-vs-composer-install.html

Hope it helps !

[Aveeva]

@gaurav_harsh1 No issue used this right? What about the version upgrade?

[amitsamsukha]

@Aveeva ,
for version upgrade you need to set up 2 GIT origins 
1. origin to your git

2. upstream to https://github.com/magento/magento2.git 

to upgrade you need to follow these steps :

git checkout development 

-> checkout to your development branch

git fetch  upstream

-> fetch all branches upstream Magento git repo

git merge upstream/2.4  --ff-only

-> this will merge 2.4 branch from magento repo to your development branch if there are no conflicts 

than you can review and merge to your master branch