Send the following on WhatsApp
Continue to Chatditto: "Operation not permitted" from SIP protected locations on El Capitan https://macmule.com/2015/11/08/ditto-operation-not-permitted-from-sip-protected-locations-on-el-capitan/
ditto: "Operation not permitted" from SIP protected locations on El Capitan https://macmule.com/2015/11/08/ditto-operation-not-permitted-from-sip-protected-locations-on-el-capitan/