XF 2.1 Error upgrading

Cooking Ketogenic

Active member
Hello,

I am trying to upgrade but receive an error. I get it both via browser and using cmd.php in shell.

Code:
[B]Fatal error[/B]: XF\Template\Compiler\Syntax\Expression::compile(): The script tried to execute a method or access a property of an incomplete object. Please ensure that the class definition "XF\Template\Compiler\Syntax\Fn" of the object you are trying to operate on was loaded [I]before[/I] unserialize() gets called or provide an autoloader to load the class definition in [B]/home/xxxxxxx/public/src/XF/Template/Compiler/Syntax/Expression.php[/B] on line [B]22[/B]
 
Interestingly... After fighting with doing this manually - I reverted back to 2.1.0, logged in and saw the one-click upgrade to 2.1.6p1 - Tried that and that worked.
I am working on migrating a phpBB3.1 board from 1.x to 2.0.12 to 2.1.0 to 2.1.6p1 in sequence.
Have upgraded to php7.2-fpm afterwards - was not the issue AFAIK.
 
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