SP Page Builder itself does not require special configuration to run on a standard PHP environment. However, when using XAMPP, some default PHP limits are quite conservative and may cause issues with heavier components.
You can try increasing the following values in your php.ini file:
memory_limit = 512M
upload_max_filesize = 128M
post_max_size = 128M
max_execution_time = 300
max_input_vars = 3000
After updating these values, please restart Apache from the XAMPP control panel.
Also ensure that an image processing extension such as GD or Imagick is enabled in your PHP configuration, as SP Page Builder relies on these libraries for image handling.
If the issue still persists after these changes, please share the exact error message or any relevant server error logs so we can investigate further.