C++: Can someone please explain why I keep getting this error? When I comment out this function Trendtracker::tweeted(), it doesnt give me this error. Would appreciate any help. Thank you!

libo+wabi.dylib: terminating with uncaught exception of type std::out_of_range: vector Program ended with exit code: 9 All Output Filter 53 54 55 1 Adds 1 to the total number times a hashtag has been tweeted. 56 I If the hashtag does not exist in TrendTracker, does nothing. 57 I1 58 /1 Must run in 0(n) time. 59 void Trendtracker::tweeted(string ht)t for (int = e;