I want to update website 5.6 to 5.7.3 version

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I want to update website 5.6 to 5.7.3 version

I export data from 5.6 but the migration tool did not install on a 5.7.3 version . Please help and give any add on to install migration on 5.7.3 version to import data

 
ConcreteOwl replied on at Permalink Reply
ConcreteOwl
Which particular XML files failed?
zianadir replied on at Permalink Reply
the migration does not install on 5.7.3 version

https://github.com/concrete5/addon_migration_tool...
ConcreteOwl replied on at Permalink Reply
ConcreteOwl
From the Migration Controller
protected $appVersionRequired = '8.3.1';
ConcreteOwl replied on at Permalink Reply
ConcreteOwl
Perhaps you should try Concrete 8.5.2 instead