Hello, 
We're trying to upgrade from self-hosted v3 to self-hosted v4.

I got this error :
I tried to follow the path but there is no setup/ folder in applications/ 

Thank you for your help.

I'm afraid, version 3 is no longer supported. If you need assistance with your migration, I would advise contacting a third party provider in the list here: https://invisioncommunity.com/third-party/providers-directory/

It must be something related to some old modification you installed at some point.

I don't recall seeing that error in all the 3.x => 4.x upgrades I've done. 🤔

I'm not familiar with that version myself so I don't know if the aforementioned table is part of Ipb 3.4. or added by a third party plugin/app. You can try to re-add that table in the database and see if it will solve the error. 

Thank you, problem solved! I installed a V4 from scratch, copied the table schema, re-created it, and it worked.

Now, I have an even tougher one:

Edited December 30, 2024Dec 30 by Flat6 club

 

Thank you, problem solved! I installed a V4 from scratch, copied the table schema, re-created it, and it worked.

Now, I have an even tougher one:

The error indicates that the total length of an index is too long. But I don't see any further details in the screenshot to point to the precise field and table where this ocurrs. 

The best way to avoid this type of error is to use InnoDB instead of MyISAM. InnoDB supports up to 3072 bytes for an index length in recent versions of MySQL.

Make sure all your tables are using InnoDB + DYNAMIC row format and utf8mb4 charset. That will help avoid lots of issues during the upgrade.

Thank you so much! I switched to InnoDB, and it worked!

However, I've encountered a new error:

There's no indication of which file or table is involved, and I can't find any PHP error logs on the server. 😕
Any ideas?

 

However, I've encountered a new error:

There's no indication of which file or table is involved, and I can't find any PHP error logs on the server. 😕
Any ideas?

It looks like to me as if a part of the code somewhere is not php 8 compatible. 

I usually update from 3.x to 4.7.3 using PHP 7.4, and after that to the latest version (4.7.19 now) using PHP 8.0/8.1. That's an option only if you have the 4.7.3 files, though. 🙄