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=1778310676&Signature=sOLb3nOI1LIGm3lA%2FS0naSVvyIGrMS8tUCvIRKbQMeCLwXTZFQikPtVrH%2Fa757osuzW%2BpJiESFbWCXOepKMCOMtLRMR7QtWJIuj3FHpnJKGGlzGLUZr4PvRyucc%2BMVxQWqTa2kZbbzSG%2Fd%2FeUJLEP23pNlOI3oJdaSfhI092Panp7%2FINir%2BrzjFUAnnbrjcoNeowIRLpu8HsDYRPSSN5jutmEPG6AqRUoqLAms2FCzK2eaL1ZwiWV%2Bww4XbDqPEwN841oX6MCR1QxcS%2FVC5QbfZmWvnWUi4ZVr1BRaFhZoTPW0uZ4gokw6Xw8UOf3nNPB%2FTl596bSI89PlRiVrhe%2BQ%3D%3D
