1. The URL “” is invalid.Response from server isn’t valid.
If you are getting this error on Magento install screen, then just check the option, SKIP BASE URL VALIDATION and you should be good to go.
2. [MAGENTO FIX] Fatal error: Maximum function nesting level of ’100′ reached, aborting!
The reason for getting this Magento Error message is a problem with the xDebug settings.
To solve this issue you need to increase the limit of the xdebug.max_nesting_level in your php.ini file. It seems to be set to 100 by default. If you set it to 1000, it might solve your problem.
3. Fatal error: Call to a member function setAttribute() on a non-object in app/code/core/Mage/Eav/Model/Entity/Attribute/Abstract.php on line 374
So in order to fix this magento error it, do the following:
• Go to /app/code/core/Mage/Eav/Model/Entity/Attribute/Abstract.php and In Line around 374, replace the:
$this->_source = Mage::getModel($this->getSourceModel())
->setAttribute($this);
with:
$element->setValues($attribute->getSource()->getAllOptions(true, true));
• After that, go to file: /app/code/core/Mage/Adminhtml/Block/Widget/Form.php and in line around 201/202:
Replace:
$element->setValues($attribute->getSource()->getAllOptions(true, true));
With:
if(is_object($attribute->getSource())){
$element->setValues($attribute->getSource()->getAllOptions(true, true));}
4. Source model “metarobots/product_attribute_source_unit” not found for attribute “meta_robots
In order to solve this Magento issue, go to phpmyadmin and run this below SQL command,
DELETE FROM `eav_attribute` WHERE `eav_attribute`.`attribute_code` = 'meta_robots'; DELETE FROM `core_resource` WHERE CODE = 'metarobots_setup';
