Custom theme not working after update to Magento 2.3.2

[BlackLabDigital]

Hi am upgrading a store from Magento 2.1.9 to 2.3.2, and I'm having issues with my current theme, which I created for the existing site. On my dev server, the site works as expected, however on the live server, the theme's default.xml and default_head_blocks.xml files are ignored. The only difference between the 3 servers (Live, Dev, New) is that the live and dev servers have the same document root path as each other, but the document root path is different on the new server, but I cannot see how this would cause an issue.

[Meetanshi · Accepted solution]

Hello @BlackLabDigital 

You can implement one of the following solutions to fix the issue:

1. Upgrade your theme with Magento.
2. Uninstall theme and reinstall it again.
   
   After that run the following commands:
   

   php bin/magento setup:upgrade
   php bin/magento setup:static-content:deploy -f
   php bin/magento indexer:reindex
   php bin/magento cache:flush

Hope it helps.

[BlackLabDigital]

Thank you that worked. I did not think to uninstall the theme

[Meetanshi]

@BlackLabDigital 

Happy to help 

[joao_zimermann1]

Hi there,

I am having the same problem

what exactly is the instructions to uninstall a custom made themed manually installed? and how do I install it again? do I have to start from scratch?

best regards,

Joao

[Eddcapone]

"Uninstall theme and reinstall it again"

How to uninstall and reinstall correctly?

I unistalled with `php bin/magento theme:uninstall frontend/company/base` but how to install it again?