|| Fatal error: Uncaught Error: Function name must be a string in /var/www/html/magento/app/code/core/Mage/Core/Model/Layout.php:555
$out .= $this->getBlock($callback[0])->$callback[1](); to $out .= $this->getBlock($callback[0])->{$callback[1]}();
|| Maximum execution time of 30 seconds exceeded in magento installation.
/* solve */ go to xampp/php/php.ini and search by max_execution_time=30 replace to 600 max_input_time=60 replace to 600 memory_limit=128M replace to 1000m
|| PHP extension soap must be loaded
I edited php.ini and removed the leading semicolon ( ; ) from extension=php_soap.dll. After restarting Apache I was able to proceed with the installation without any other issues.