git bash magento all commands generating errors

[hamza_shahid1]

Hi Everyone, I am having an issue regarding M2 and I have tried all the solutions but not able to resolve this one.The issue came after installing Infortis Theme and now whenever I type any command in GIT BASH regarding Magento it generates errors and even the simple command php bin/magento generates error.Also I am not able to access my magento store front and admin panel  as it says 

 An error has happened during application run. See exception log for details. Could not write error message to log. Please use developer mode to see the message.    

And when I type php bin/magento in gitbash the following errors are generated 

$ php bin/magento

PHP Fatal error:  Uncaught Error: Cannot instantiate interface Magento\Framework\Setup\Declaration\Schema\SchemaConfigInterface in C:\xampp\htd

ocs\Magento\vendor\magento\framework\ObjectManager\Factory\Dynamic\Developer.php:50

Stack trace:

#0 C:\xampp\htdocs\Magento\vendor\magento\framework\ObjectManager\ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Dynamic\Develo

per->create('Magento\\Framewo...')

#1 C:\xampp\htdocs\Magento\vendor\magento\framework\ObjectManager\Factory\AbstractFactory.php(160): Magento\Framework\ObjectManager\ObjectManag

er->get('Magento\\Framewo...')

#2 C:\xampp\htdocs\Magento\vendor\magento\framework\ObjectManager\Factory\AbstractFactory.php(246): Magento\Framework\ObjectManager\Factory\Abs

tractFactory->resolveArgument(Array, 'Magento\\Framewo...', NULL, 'schemaConfig', 'Magento\\Framewo...')

#3 C:\xampp\htdocs\Magento\vendor\magento\framework\ObjectManager\Factory\Dynamic\Developer.php(34): Magento\Framework\ObjectManager\Factory\Ab

stractFactory->resolveArgumentsInRuntime('Magento\\Framewo. in C:\xampp\htdocs\Magento\vendor\magento\framework\ObjectManager\Factory\Dynamic\D

eveloper.php on line 50

Fatal error: Uncaught Error: Cannot instantiate interface Magento\Framework\Setup\Declaration\Schema\SchemaConfigInterface in C:\xampp\htdocs\M

agento\vendor\magento\framework\ObjectManager\Factory\Dynamic\Developer.php:50

Stack trace:

#0 C:\xampp\htdocs\Magento\vendor\magento\framework\ObjectManager\ObjectManager.php(70): Magento\Framework\ObjectManager\Factory\Dynamic\Develo

per->create('Magento\\Framewo...')

#1 C:\xampp\htdocs\Magento\vendor\magento\framework\ObjectManager\Factory\AbstractFactory.php(160): Magento\Framework\ObjectManager\ObjectManag

er->get('Magento\\Framewo...')

#2 C:\xampp\htdocs\Magento\vendor\magento\framework\ObjectManager\Factory\AbstractFactory.php(246): Magento\Framework\ObjectManager\Factory\Abs

tractFactory->resolveArgument(Array, 'Magento\\Framewo...', NULL, 'schemaConfig', 'Magento\\Framewo...')

#3 C:\xampp\htdocs\Magento\vendor\magento\framework\ObjectManager\Factory\Dynamic\Developer.php(34): Magento\Framework\ObjectManager\Factory\Ab

stractFactory->resolveArgumentsInRuntime('Magento\\Framewo. in C:\xampp\htdocs\Magento\vendor\magento\framework\ObjectManager\Factory\Dynamic\D

eveloper.php on line 50

Please if you are familiar with this issue then help me out.I am struck on this one for too long now

Thanks in advance

[Damian Culotta]

Hi @hamza_shahid1 ,

Which version of Magento and which version of PHP are you using?

[hamza_shahid1]

I am using latest version of Magento. Every thing was working fine.I created approx 36 websites stores,store views,root categories e.t.c  on my magento and then migrated from m1 to m2.Worked fine.I have had infortis theme installed on another pc.I just copied the app and pub folder and from there and pasted into my new magento installation .That's when it started to trouble and generating errors.I guess I shouldn't have done that because some files are replaced or merged and that's possibly the reason my cli, magento admin panel and store front end is not working  

[qaisar_satti]

hi,

 You cannot replace the app folder because in etc folder config.xml have containig  configuration of module. maybe that is causing the issues.

You can copy those folder

app/code

app/design

then run following command 

php bin/magento setup:upgrade