Root should have been removed when you flashed the firmware via Odin.
I figured that you'd get the errors with the Google apps.
Try booting to stock recovery by holding the volume up+home+power, the opposite of download mode, you'll see a list of options in recovery, use volume up/down to move up or down the list, select the factory reset option, press power to confirm, after the reset finishes, select the option to wipe cache partition, after that finishes, reboot the device.
Don't login to your Google account during setup, just bypass all of that, don't open any apps at all. Give it a few minutes to see if it starts the errors again, if it doesn't, go to system settings>accounts and add your Google account to get signed into the device. Once logged in, don't open any apps, give it a few minutes to see if the errors start, if they don't, open the Playstore app, look for app updates, update all listed Google related apps. If it won't update or starts giving errors, you'll have to download updated versions of your Google apps from the internet or from this website if they are linked here, you can also go to apkmirror .com and download them if they have updated versions that work for your device. Make sure you only download apps that are compatible with ARM devices, download them using PC then move them to an sdcard then put the sdcard in the device. Then go to system settings>security, find the "unknown sources" option and enable it, this will allow you to install the updated apps from the sdcard. Then, using your devices file manager, you can go to the sdcard and install the apps from there by tapping on them and selecting install.
If you have difficulty with any of this, we'll take a step back and go one step at a time so I can get a sense of what is going on at each step along the way.
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Great help! Errors all seem to be gone and I have updated most if not all of the google apps. My only issue is that I cannot ring out or use WhatsApp. It’s telling me that my phone is registered to a network? I have tried to do some troubleshooting but still no luck. Not sure how I can get it to recognise my T mobile network, something must have become corrupted.
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