library(knn)

## Error in library(knn): there is no package called 'knn'

x <- cbind(x_train,y_train)

## Error in cbind(x_train, y_train): object 'x_train' not found

# Fitting model
fit <-knn(y_train ~ ., data = x,k=5)

## Error in knn(y_train ~ ., data = x, k = 5): could not find function "knn"

summary(fit)

## Error in summary(fit): object 'fit' not found

# Predict Output 
predicted= predict(fit,x_test)

## Error in predict(fit, x_test): object 'fit' not found