Magento 2.3.0 - Authorize.Net MD5 Hash to SHA-256

[sequii2017]

Magento what a freaken NIGHTMARE working with this cms.

Anyways lets get started.

https://support.magento.com/hc/en-us/articles/360024368392-Update-Authorize-Net-Direct-Post-from-MD5...

This didn't work for me

1. Upload the patch to your Magento root directory.
2. Run the following SSH command:
   patch -p1 < %patch_name%
   had to do 
   patch -p1 < patch_name
   
   
   
   
   
   now im getting pay 500 on my cart
   https://euniformstore.com/checkout/cart/
   
   Signature Key does show and ive create one and added it.
   
   other error
   

[sequii2017]

had upgrade from 2.2.6 to 2.30 didn't use right pach

[sequii2017]

1. Log into the Merchant Interface at https://account.authorize.net.
2. Click Account from the main toolbar.
3. Click Settings in the main left-side menu.
4. Click API Credentials & Keys.
5. Select New Signature Key. Review the options available.
6. Click Submit to continue.
7. Request and enter PIN for verification.
8. Your new Signature Key is displayed. Copy this key to add to your Magento Admin configuration.
   even create new transaction key what the heck may as well try at this point.

still getting this erro

[sequii2017]

fixed by php bin/magento setup:upgrade; php bin/magento setup:static-content:deploy -f;