Theme causing 502 error with Yoast Local

WPengine is helping me with this as well but they are tracing the issue back to the theme.

“I was able to find two things in our logs that may contribute to the issue:

Firstly there’s the server level error log:

[Wed Apr 29 11:42:18 2015] [notice] child pid 7181 exit signal Segmentation fault (11)
Second we have the actual 502 from the error log. You can see the 502 occurred one second prior to the segfault:

66.162.212.19 justmind.org – [29/Apr/2015:11:42:17 +0000] “GET /wp-admin/admin.php?page=wpseo_local HTTP/1.1” 502 1180 “http://justmind.org/wp-admin/admin.php?page=wpseo_dashboard” “Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36”
Finally, I also found this in the debug log, and it’s happening in the same second as the 502:

[29-Apr-2015 11:42:17] PHP Notice: register_sidebar was called incorrectly. No id was set in the arguments array for the “Test 1” sidebar. Defaulting to “sidebar-8”. Manually set the id to “sidebar-8” to silence this notice and keep existing sidebar content. Please see Debugging in WordPress for more information. (This message was added in version 4.2.0.) in /nas/wp/www/cluster-2031/williamasch/wp-includes/functions.php on line 3560

This seems to indicate that there’s definitely a code issue. I’ve done my best to dig into this and find out where the code conflict is coming from, but the best I could get even from a stack trace was that it might have something to do with the theme.”