the Mobile_Detect class referenced inthat line is missing
It seems that you have not installed PHP Mobile Detect Resource APIs required by our module. Please help to check Step 1 -- (Required) Install PHP Mobile Detect Resource APIs herein the UB Mega Menu user guide again.
Meanwhile, our team is having a 7-day national festival starting from 10 — 16 Feb. We will be off in three days (12, 13, and 14 Feb). For the other days, our technical team will follow up on your case if you reach out to us during this time. However, it will take us a bit longer for each turnaround.
Our apology for the unexpected delay caused by this. And thanks for your understanding and support.