I$\text{'}$m struggling to knit this section for R Studio.

$```\{$r$\}$

# Load necessary libraries

library$($dplyr$)$

library$($ggplot$2)$

# Check if the dataset is loaded

if $($exists$("$Book$\_35"))\{$

print$("$Dataset 'Book$\_35\text{'}$ is loaded."$)$

$\}$ else $\{$

stop$("$Dataset 'Book$\_35\text{'}$ is not loaded."$)$

$\}$

# Inspect the first few rows of the dataset

head$($Book$\_35)$

# Check the structure of the dataset

str$($Book$\_35)$

# Check for missing values

summary$($Book$\_35)$

# Ensure column names are correct

required$\_$columns $<-$ c$("$Habitat$",$ "Songbits", "Country"$)$

if $(!$all$($required$\_$columns $\%$in$\%$ colnames$($Book$\_35)))\{$

stop$("$One or more required columns are missing from the dataset."$)$

$\}$

# Plotting

Book$\_35\%>\%$

ggplot$($aes$($x $=$ Habitat, y $=$ Songbits, color $=$ Country$))+$

geom$\_$boxplot$()+$

labs$($

x $=$ "Habitat",

y $=$ "Songbits $($Songbits$/$Minute$)",$

color $=$ "Country",

caption $=$ "Number of Songbits produced by birds, from each country and each habitat, per Minute"

$)+$

theme$\_$classic$()+$

scale$\_$x$\_$discrete$($labels $=$ c$("$Cloud Forest", "Plains"$))+$

scale$\_$color$\_$manual$($values $=$ c$("$Magenta$",$ "Blue", "Green"$))$

$```$

And I received the following error:

processing file: Untitled.Rmd

Quitting from lines at lines $24-63[$unnamed$-$chunk$-2]($Untitled$.$Rmd$)$

Error:

$!$ Dataset 'Book$\_35\text{'}$ is not loaded.

Execution halted

$--$

I thought I loaded in the Book$\_35$ dataset by it hasn't loaded in$.$