Bug Server error on install

[Spinball]

First of all, out of habit, I entered www.avforums.com as the domain for the license, where the actual domain is www.m2n.co.uk.

M2N Limited

www.m2n.co.uk

But I can't see how to change this in my license.

Anyway, on installing on to www.m2n.co.uk having just upgraded to Xenforo 2.1.4, I got

Error: Call to undefined method GuzzleHttp\Psr7\Response::json() in src/addons/DBTech/eCommerce/Repository/Country.php at line 139

1. DBTech\eCommerce\Repository\Country->updateCountryList() in src/addons/DBTech/eCommerce/Setup.php at line 160
2. DBTech\eCommerce\Setup->postInstall() in src/XF/AddOn/AddOn.php at line 523
3. XF\AddOn\AddOn->postInstall() in src/XF/Admin/Controller/AddOn.php at line 702
4. XF\Admin\Controller\AddOn->actionFinalize() in src/XF/Mvc/Dispatcher.php at line 321
5. XF\Mvc\Dispatcher->dispatchClass() in src/XF/Mvc/Dispatcher.php at line 244
6. XF\Mvc\Dispatcher->dispatchFromMatch() in src/XF/Mvc/Dispatcher.php at line 100
7. XF\Mvc\Dispatcher->dispatchLoop() in src/XF/Mvc/Dispatcher.php at line 50
8. XF\Mvc\Dispatcher->run() in src/XF/App.php at line 2178
9. XF\App->run() in src/XF.php at line 390
10. XF::runApp() in admin.php at line 13

Re-running the install stops at the same point with the same error, so I'm stuck now.
Please help.
Thanks

 

[Spinball]

Ah bollocks, I downloaded the Xenforo 2.0 version. Done this too much. Assumed the top one was for Xenforo 1
Ignore this thread, sorry.