How to solve Check Component Dependency Error in magento 2.1.1 - magento-2.0

Question

Here I show my problem in image file
Can any one help me how to solve this problem?
Show This Error:
Check Component Dependency
We found conflicting component dependencies. Hide detail
Command "update" failed: Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.
Problem 1
- Installation request for magento/product-community-edition 2.1.1 -> satisfiable by magento/product-community-edition[2.1.1].
- magevision/module-free-shipping-admin 2.1.0 requires magento/framework 100.0.* -> satisfiable by magento/framework[100.0.2, 100.0.3, 100.0.4, 100.0.5, 100.0.6, 100.0.7, 100.0.8, 100.0.9, 100.0.10, 100.0.11].
- Can only install one of: magento/framework[100.1.1, 100.0.2].
- Can only install one of: magento/framework[100.1.1, 100.0.3].
- Can only install one of: magento/framework[100.1.1, 100.0.4].
- Can only install one of: magento/framework[100.1.1, 100.0.5].
- Can only install one of: magento/framework[100.1.1, 100.0.6].
- Can only install one of: magento/framework[100.1.1, 100.0.7].
- Can only install one of: magento/framework[100.1.1, 100.0.8].
- Can only install one of: magento/framework[100.1.1, 100.0.9].
- Can only install one of: magento/framework[100.1.1, 100.0.10].
- Can only install one of: magento/framework[100.1.1, 100.0.11].
- magento/product-community-edition 2.1.1 requires magento/framework 100.1.1 -> satisfiable by magento/framework[100.1.1].
- Installation request for magevision/module-free-shipping-admin 2.1.0 -> satisfiable by magevision/module-free-shipping-admin[2.1.0].
For additional assistance, see component dependency help .

Answer 1

Solved this issue.
You need to update php memory limits in .htaccess and .user.ini files in Magento root directory from 765MB to 2G as they override system php limits.

Answer 2

Your problem is that the extension you're installing expects Magento 2.0.x but you're using 2.1.x.
This leads me to believe that either the extension authors either:
Aren't ready to support Magento 2.1
or
They have erroneously constrained their packages requirements by accident, not understanding Composer's versioning scheme.
Referencing the extension you're installing on Github we can see it specifies some requirements:
"require": {
"php": "~5.5.0|~5.6.0|~7.0.0",
"magento/module-config": "100.0.*",
"magento/module-store": "100.0.*",
"magento/module-shipping": "100.0.*",
"magento/module-backend": "100.0.*",
"magento/module-quote": "100.0.*",
"magento/framework": "100.0.*"
}
Let's take a look at one of the modules required by the extension: magento/module-config with a version constraint of 100.0.*.
I can see that Magento 2.0.10 would supply a compatible version 100.0.5.
Whereas you have Magento 2.1.1 installed, which requires version 100.1.1.
100.1.1 does not satisfy the 100.0.* requirement.
There are roughly two solutions to your problem
Use Magento 2.0 (not ideal but could unblock you to play around with the extension)
Get in touch with the extension developer and see if they intend to support Magento 2.1 (either by updating their code to be compatible or fixing their package to allow installation under 2.1)

Answer 3

You may see require-dev tag in composer.json file.
Run composer install or update with --no-dev flag. This will not install developer dependency packages.
composer install --no-dev
OR
composer update --no-dev