Magento2 install error iteration

Please add the following code to your .htaccess

php_value xdebug.max_nesting_level 500

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Looks like web installer tools in active development. Try use console installer php dev/shell/install.php

Add ini_set('xdebug.max_nesting_level', 200); in your index.php file of setup folder.

you can see more details from https://github.com/magento/magento2/issues/815