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Convert 3.4.7 to 4

paul banks

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Step 1

Some or all of the tables or columns in your database are not using a utf8 collation (ipb3backup_vars is latin1_swedish_ci). You must convert your database to UTF-8 in order to continue


Step 2

You have 338 table(s) in this database that are not UTF-8. You must convert these tables to UTF-8 before you can proceed with the upgrade.


Step 3

Try starting Converter every time says:


Error: COLLATION 'utf8_unicode_ci' is not valid for CHARACTER SET 'utf8mb4' File: /system/Db/Db.php Line: 186


I do not know more, can anybody help me?
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He has a utf8mb4 table in his database, but chose utf8 when he converted - the software did not correctly account for this and tried to fix a utf8mb4 collation to utf8_unicode_ci on a utf8mb4 character set table which isn't allowed.  It's a bug - we have seen it ourselves recently and fixed it for the next release.

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