Import Plugin on localhost Craft 2 crashes
This could be a PHP memory limit issue but it's hard to say until you get access to the log files or can output the error to the browser instead of a blank page.
I would first make sure devMode is enabled in Craft. Then I would look at the log files in storage/logs/web.log or storage/logs/php-errors.log. There might be a lot of stuff logged already, so sometimes it's easier to delete everything in logs and then redo the import and see what errors were logged.