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=1778803223&Signature=rACtL8iLNoaNS0xjSZ8I%2F75pI0LoyFEHcwnaw1czIZS%2FxCgjk%2FUO%2FpC6YZGRyBm%2FFUaP3RgghnJT8AQlA54V3r4A%2FQpl7mxDnXJPh9zDXjV12OF5uMOnD8ywb%2BtUWUtCadmQnKvfNoqpSg9jcZWM5g6dD29R3BeVlSM5oGkEWYXGU%2BHRM4ucIyEdxuqOv%2FII43qGsyzqLcjydq15opo7kzzPZlU%2FxQmNIExnshNYFadcjirOn%2BrXK1HNM8WxPWupGk1FFw1x1Ist2cSh6tuwMSTRZzW53IKv25Pb44juW6tfOEKAMzeHoORzVSZm2M1ioOWMHasOyQlipCM0BssN%2Bw%3D%3D
