"Object (data) not found Execution halted"

The data works in R! I just ran it once more.

Here's the code:

library(dplyr)
library(plotly)
library(scales)

ggplot(DMAMappingData,aes(long,lat))+
geom_polygon(aes(fill=`DTC Penetration Levels`,group=group),colour=I("white"))+
geom_polygon(data=States, aes(long, lat,group=group, colour = I("black"))
,alpha=0)+
coord_map("albers", at0 = 45.5, lat1 = 29.5)+
theme_bw() + theme(panel.border = element_blank(), panel.grid.major = element_blank(),
panel.grid.minor = element_blank(), axis.line = element_line(colour = "black"),
axis.line.x = element_blank(),axis.line.y = element_blank(),
axis.text.x = element_blank(),axis.text.y = element_blank(),
axis.title = element_blank(),axis.ticks = element_blank())+
scale_fill_brewer(palette = "Set1")

Sample DMA Mapping Data:

There is another file it uses in the code named "States" but that lays out the states on the USA. But the problem is with "DMAMappingData not found, so I don't know what the issue is. Thank you for your help!