error : Check Component Dependency

[jean _pierrehur]

Hello,

I am new and have never been familiar with Magento before

i installed magento2 from softaculous, then i bought an extension in market.magento.com

but when installing the extension , i faced with the error: Check Component Dependency 

I cannot pass the first step to install the extension, I contact with the extension developer but they dont help or support.

Do you have any way to solve this error?

please help me!

Thank anyway,  

[jean _pierrehur]

hello

i finally found out the solution

Remove the tag "require-dev" from composer.json 

},
"require-dev": {
    "phpunit/phpunit": "4.1.0",
    "squizlabs/php_codesniffer": "1.5.3",
    "phpmd/phpmd": "@stable",
    "pdepend/pdepend": "2.4.0",
    "fabpot/php-cs-fixer": "~1.2",
    "lusitanian/oauth": "~0.3 <=0.7.0",
    "sebastian/phpcpd": "2.0.0"
},