Magento 2 Extension missing on Admin

[abimaelmon9889]

My Magento 2 shop used to have this extension named FME Price Calculator but for some reason the extension no longer appears on the Admin menu. 

I noticed that all the extensions folders can be seen on /magento2/app/code , including the FME folder with a Pricecalculator folder in it, so why is the extension not showing on Admin?

[Bhanu Periwal]

Hello @abimaelmon9889 

Please check status of module first by below command:

bin/magento module:status

If module showing under disable modules then enable by below command:

bin/magento module:enable <vendorname>_<modelname>

If not showing in enable or disable list then run below commands:

sudo chmod -R 777  var/ pub/ generated/
bin/magento setup:upgrade
bin/magento setup:di:compile
bin/magento setup:static-content:deploy

It may help you!
Thank you

[abimaelmon9889]

Hello @Bhanu Periwal thank you for your reply.

The FME_Pricecalculator module is not even listed at all. 

Inside the FME folder there's Pricecalculator > Controller > Adminhtml > Ajax > Index.php

And that' it. There is no other file inside any of the folders except for the Index.php file. 

I've noticed that all the models that work have more files, including a registration.php file, which the Pricecalculator folder does not have. Do you think I should add that file myself, and maybe even other files? I'm kind of hessitant becaus I've never altered the code before and I don't know php. 

[Sanjay Jethva]

@abimaelmon9889 

Please check in app/etc/config.php file whether the module is enabled or not.

If the extension is disabled there would be 0

like Vendor_Module => 0

Keep it 1 and clear the cache

[abimaelmon9889]

Hi @Sanjay Jethva thank you for your reply.

The module is not even listed on app/etc/config.php.

Also, I noticed that the model folder doesn't have a registration.php file. It only has one Index.php file.

Do you think I should create a registration.php file? I've never changed anything in the code so I'm worried that it could make things worse somehow.