Cloud Flare and Rocket Script is known to cause some issues with WordPress plugins: http://snippets.webaware.com.au/snippets/stop-cloudflare-rocketscript-breaking-wordpress-plugin-scripts/.
Try disabling Cloud Flare for the sb-instagram.js and sb-instagram.min.js files to see if it corrects the issue.
Click on this link to download a modified .zip file plugin mentioned in this article that may prevent Instagram Feed’s js file from being included in rocketscript: https://cdn.smashballoon.com/wp-content/uploads/2017/07/16153053/sbi-no-rocketscript.zip?GoogleAccessId=smashballoon-offload-media-sa%40sb-backups-all.iam.gserviceaccount.com&Expires=1777483063&Signature=p%2F%2Fj84FqR5CiHxdOi73IhEs5EOy6ERmhdfDn52HF0%2BcNpbdriCX5P2cdykMEsQZklapisOucn8LP%2FyH2tHhv5YgVU6%2BoqzhTyaa88dUEEeLRuFiobloh7fUmim3tK7wufT7Vgm3h2okfGqBwMDNKWI55jT9SYGJNO3qvKDtedUAwACXTA5aK0Yu7cx%2FtghwsfAHB%2BuEY%2FWht7dHuQJNVDSCMFKLSF%2Bqbitb%2BKzPCLEzJWSEhFijA0jxaXTgnCrXaokYG621A9AluP8ox4m5Xr4dtJYiJ2kKvf%2F%2B3exRmHkA5xuR4J1BiFu0Jj%2BjkGk4LPWQvsN4j3c5mtJlfshVUUQ%3D%3D
