Issue during deleting all cache in magento 2

Normally you delete all cache either using

php bin/magento cache:flush --all

Or,

rm -rf var/cache/* var/page_cache/* var/view_preprocessed/* var/generation/*

You may receive some errors as

Warning: ltrim() expects parameter 1 to be string, object given in D:\xampp\htdocs\m2\vendor\magento\framework\Code\Generator\EntityAbstract.php on line 152

Notice: Uninitialized string offset: 0 in D:\xampp\htdocs\m2\vendor\magento\framework\Autoload\ClassLoaderWrapper.php on line 81

Notice: Uninitialized string offset: 0 in D:\xampp\htdocs\m2\vendor\composer\ClassLoader.php on line 317

Notice: Uninitialized string offset: 0 in D:\xampp\htdocs\m2\vendor\composer\ClassLoader.php on line 349
exception 'RuntimeException' with message 'Source class "" for   "Magento\Framework\App\Response\Http\Interceptor" generation does not exist.'
in D:\xampp\htdocs\m2\vendor\magento\framework\Code\Generator.php:185 Stack trace:     #0  
D:\xampp\htdocs\m2\vendor\magento\framework\Code\Generator.php(112): Magento\Framework\Code\Generator->tryToLoadSourceClass('Magento\\Framewo...', Object(Magento\Framework\Interception\Code\Generator\Interceptor)) #1 
D:\xampp\htdocs\m2\vendor\magento\framework\Code\Generator\Autoloader.php(35): Magento\Framework\Code\Generator->generateClass('Magento\\Framewo...') #2 [internal function]: Magento\Framework\Code\Generator\Autoloader->load('Magento\\Framewo...') #3 
D:\xampp\htdocs\m2\vendor\magento\framework\ObjectManager\Factory\AbstractFactory.php(93): spl_autoload_call('Magento\\Framewo...') #4 
D:\xampp\htdocs\m2\vendor\magento\framework\ObjectManager\Factory\Compiled.php(88): Magento\Framework\ObjectManager\Factory\AbstractFactory->createObject('Magento\\Framewo...', Array) #5 
D:\xampp\htdocs\m2\vendor\magento\framework\ObjectManager\Factory\Compiled.php(130): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Framewo...') #6 
D:\xampp\htdocs\m2\vendor\magento\framework\ObjectManager\Factory\Compiled.php(67): Magento\Framework\ObjectManager\Factory\Compiled->get('Magento\\Framewo...') #7     
D:\xampp\htdocs\m2\vendor\magento\framework\ObjectManager\ObjectManager.php(57): Magento\Framework\ObjectManager\Factory\Compiled->create('Magento\\Framewo...', Array) #8 
D:\xampp\htdocs\m2\vendor\magento\framework\App\Bootstrap.php(233): Magento\Framework\ObjectManager\ObjectManager->create('Magento\\Framewo...', Array) #9

On this situation you all can do is re compile the files as

php bin/magento setup:di:compile

After all the problem is solved.