Upgrade 2.4.1 bug

[Frankriva2003]

Hi Serghey,

I have contacted my hosting company and I asked them to perform the latest update. Since then, unfortunately. The automated buttons onto projects occur a 500 internal error.
This is the error given. Is it something to do with the update, my database? Do I go back to 2.4?

[27-Feb-2019 16:31:18 Europe/London] PHP Fatal error: Uncaught Error: Call to undefined method fieldtype_days_difference::update_items_fields() in /home/thejeweller/public_html/plugins/ext/classes/processes.php:911
Stack trace:
#0 /home/thejeweller/public_html/plugins/ext/classes/processes.php(564): processes::autoupdate_datetime_diff('21', 1507)
#1 /home/thejeweller/public_html/modules/items/actions/processes.php(39): processes->run(Array, 0)
#2 /home/thejeweller/public_html/index.php(20): require('/home/thejewell...')
#3 {main}
thrown in /home/thejeweller/public_html/plugins/ext/classes/processes.php on line 911
Thanks,
Frankie

[support]

Make sure you have rewrite all fields for main version and extension.

[Frankriva2003]

Hi Serghey,

I just contacted the hosting company and they asked if you kindly tell me the exact steps so they avoid anymore errors.
Appreciate that,
Thanks

[support]

How did you update software?
The instruction is here https://www.rukovoditel.net/new_release.php?version=2.4
Did you follow all steps?

[Frankriva2003]

Hi Serghey,
I have contacted the hosting company again and gave them your link. They managed to get it all sorted. Appreciate all of your help.
Have a nice day