WP Import Process Keeps Crashing

Hi there,

I have tried to import a site from WordPress.com to this site using the WordPress import tools, however, when I include media attachments the site crashs with this error:

This site can’t be reached The web page at https://lumpish-vividness.wpmudev.host/wp-admin/admin.php?import=wordpress&step=2 might be temporarily down or it may have moved permanently to a new web address.

ERR_SPDY_PROTOCOL_ERROR

I am assuming this is a resource error maybe?

Any help appreciated.