Exercise editor linting warns of unexpected symbol when using if ... else if

[AlbertLeeUCSF]

Inside of my learnr tutorial, I'm getting warnings whenever I use else if. See below (lines 6, 8, 10):

Here is the code for the exercise and its solution

{r KC2, exercise=TRUE, exercise.lines=15}
# YOUR WORK HERE
# Subtract 85 from 100 and assign the result to an object named `score`

# If score is 90 or above, assign "A" to an object named `grade`

# Otherwise if the `score` is 80 or above, assign "B" to an object named `grade`

# Otherwise if the `score` is 70 or above, assign "C" to an object named `grade`

# Otherwise if the `score` is 60 or above, assign "D" to an object named `grade`

# Otherwise if the `score` is below 60, assign "Hidden" to an object named `grade`

# Print the value stored in `grade`

{r KC2-solution}
# Subtract 85 from 100 and assign the result to an object named `score`
score = 100 - 85

if (score >= 90){          # If score is 90 or above, assign "A" to an object named `grade`
  grade <- "A"
} else if (score >= 80){   # Otherwise if the `score` is 80 or above, assign "B" to an object named `grade`
  grade <- "B"
} else if (score >= 70){   # Otherwise if the `score` is 70 or above, assign "C" to an object named `grade`
  grade <- "C"
} else if (score >= 60){   # Otherwise if the `score` is 60 or above, assign "D" to an object named `grade`
  grade <- "D"
} else{                   # Otherwise if the `score` is below 60, assign "Hidden" to an object named `grade`
  grade <- "Hidden"
}

# Print the value stored in `grade`
print(grade)

Does anyone know why this is happening?

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