Hummingbird - Error in debug log

Unable to resolve error:
[05-Apr-2018 20:31:50 UTC] PHP Warning: file_get_contents(): SSL: Handshake timed out in /data/19/2/35/75/2687075/user/2950978/htdocs/wp-content/plugins/wp-hummingbird/core/modules/minify/class-minify-group.php on line 1186

The website is timing out and turning off asset optimization. I have temporarily deactivate the asset optimization feature so that the live website is not negatively affected.