Fatal error When adding Warehouse

[nzrubin]

hello could you advise please! im getting an error when trying to add a Warehouse

Fatal error: Class 'SilverStripe\Forms\GridField\GridField' not found in C:\wamp\www\myshop\hasonefield\code\HasOneButtonField.php on line 13

i have now SilverStripe 3.6 below is my info of what i got

"require": { "php": ">=5.3.3", "silverstripe/cms": "^3.1", "silverstripe/framework": "^3.1", "silverstripe/reports": "^3.1", "silverstripe/siteconfig": "^3.1", "silvershop/core": "^2.2", "burnbright/omnipay-paystation": "~2.0", "omnipay/paymentexpress": "~2.0", "unclecheese/betterbuttons": "1.2.", "silverstripe/googlesitemaps": "^1.5", "silverstripe/userforms": "", "silverstripe/blog": "2.@dev", "silverstripe/comments": "^2.1", "ezyang/htmlpurifier": "dev-master", "thisisbd/silverstripe-maintenance-mode": "", "heyday/silverstripe-menumanager": "~2.1.0", "silvershop/shipping": "master" },

[nzrubin]

not sure what happened but after i added a Stock module all became just fine .... i hope it will help somebody or give some hint

[wilr]

SilverStripe\Forms\GridField\GridField is a SilverStripe 4.0 namespace not 3.6 which would indicate that perhaps you updated to 4.0?