Hi,

First, i'm sorry for my bad english :)

I want to install Form Builder on Magento 2.1.6.

When I launch the command  : php -f bin/magento setup:di:compile

I've got 4 errors :

Errors during compilation:
        Lof\Formbuilder\Helper\Data
                Incorrect dependency in class Lof\Formbuilder\Helper\Data in /var/www/websites/2646-e-creation-96073-2/e-creation-96073-2/app/code/Lof/Formbuilder/Helper/Data.php
\Magento\Framework\Module\Manager already exists in context object
Total Errors Count: 1
Errors during compilation:
        Lof\Formbuilder\Helper\Data
                Incorrect dependency in class Lof\Formbuilder\Helper\Data in /var/www/websites/2646-e-creation-96073-2/e-creation-96073-2/app/code/Lof/Formbuilder/Helper/Data.php
\Magento\Framework\Module\Manager already exists in context object
Total Errors Count: 1
Errors during compilation:
        Lof\Formbuilder\Helper\Data
                Incorrect dependency in class Lof\Formbuilder\Helper\Data in /var/www/websites/2646-e-creation-96073-2/e-creation-96073-2/app/code/Lof/Formbuilder/Helper/Data.php
\Magento\Framework\Module\Manager already exists in context object
Total Errors Count: 1
Errors during compilation:
        Lof\Formbuilder\Helper\Data
                Incorrect dependency in class Lof\Formbuilder\Helper\Data in /var/www/websites/2646-e-creation-96073-2/e-creation-96073-2/app/code/Lof/Formbuilder/Helper/Data.php
\Magento\Framework\Module\Manager already exists in context object
Total Errors Count: 1

Can you help me ?

Nicolas.