vBulletin Upgrade from V4 to V5.6 Error

[El Hulk]

Hi Wayne, it happens after I enter the credentials for the admin account, I can log in fine on the front end of the forum, create topics and do some maintenance but I cannot access the control panel,...

[El Hulk]

To All,

I upgraded the vBulletin from version 4 to version 5.6, no error on the upgrade but now I cannot log in the admin control panel, when I try all I get is a blank page, the topics and...

[El Hulk]

Yes, I did replace on queries only but still no go, I will try the upgrade and see if that works, thank you....

[El Hulk]

Thanks again, replacing the word rank with "rank" has not been working so far, so the question is if I upgrade to vBulletin 5 now, is it supported by MySQL 8 and it may solve the issue?
...

[El Hulk]

Thak you, I will look into it, thanks....

[El Hulk]

Hello, my web hosting upgraded MySQL to version 8 overnight and I'm getting the following error on all pages:


You have been banned for the following reason:
No reason was specified....

[El Hulk]

Alright, I will upgrade, thank you for taking the time to reply.

[El Hulk]

ISP upgraded PHP to 7.2 this morning and got the following error:

Error: Call to undefined function split() in ..../global.php(607) : eval()'d code on line 4

Any ideas on how...