Magento 2.3 Upgrade - Blank Admin & Site Page

[pasjake]

Hello, 

I've upgraded Magento from 2.1.5 to 2.3.

Upon a successful installation i now have blank pages. 

I've amended the code in Validator.php as per other recommendations on this forum but still have blank pages. 

Can anyone help? 

[Kapil Prajapati]

Hello Pasjake, 

Please share more details about the issue, at fifir you can check MagMage logs in var/logs directory to identify what's wrong.

Make sure that you are cucurrent at development mode as it is rerecommend to upgrade Magento versions in development mode. 

Thanks 

[Manish Mittal]

Hello @pasjake 

Please share find logs in var/log folder and share if there any error in logs.

[jake_brown]

Thank you for your responses, i missed these and ploughed on de bugging, turns out it was a memory limit error. 

All installed and functioning (almost).

I have a new error where i cannot edit any products as it says they don't exist, although they are all there? 

Should i start a new thread for this? 

[Kapil Prajapati]

Product not exists, you can solve this problem by simply reindex use following command:

php bin/magento indexer:reindex

Additional set cron jobs it will autautomatica execute neeed commands. Follow this linkl

https://devdocs.magento.com/guides/v2.0/config-guide/cli/config-cli-subcommands-cron.html

If you find this helpful click kudos button ☺️

[Meetanshi]

Hello @pasjake 

Refer the steps at Solved: Magento 2.2.7 and 2.3 Admin Page Blank Issue for the solution.

Hope it helps