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=1782282879&Signature=RsdkIJSQpmeUC3d%2FFk8gb%2BGL2EitECgQSz3rEFsNT5hYrpa%2FB%2FUu294704htGO%2Fp6U0GRKIYgtrIL2EOF0Gj%2BO4qWMzyzDrXOlBymh9Cw2alED1IRjODB80373viUQ8a1Bo1HfR3DHv8KBlN%2FTyGmA3A6xxAyrhxpxuH%2BsOY1paTv0MYZkbErpLtL5bsKw%2F0dPNd6QInNBk7qoXiZmBc8Ds5H6DrLowxsYeMaTbYdRZZ6ClTJ%2FNe9eyG0zxmccQf8kNaApZunVq6vMGzLz17MWPD%2FAzqwa6LwGwqTp1XbYJMdVKfeXHlZNSBG5IqGXwMzWdfDIoQLoszVemIXmZUFA%3D%3D