I am trying to program in R and I keep getting the following error after the randomForest part runs:

Error in randomForest.default(m, y, ...) : Need at least two classes to do classification.

library('ggplot2') # visualization library('ggthemes') # visualization library('scales') # visualization library('dplyr') # data manipulation library('mice') # imputation library('randomForest') # classification algorithm library('caret') library('caTools')

#load weather_dummyvariables weather_data <- read.csv(file.choose(), sep = ',', header = TRUE)

#see summary of data summary(weather_data)

set.seed(123) #to get repeatable data

train <- weather_data[1:20,] test <- weather_data[21:66,]

#random forest model rf_model <- randomForest(factor(rain) ~ dew_pt + pressure + scattered_clouds + overcast, data = train)

# Show model error plot(rf_model, ylim=c(0,0.36)) legend('topright', colnames(rf_model$err.rate), col=1:3, fill=1:3)

# Get importance importance <- importance(rf_model) varImportance <- data.frame(Variables = row.names(importance), Importance = round(importance[ ,'MeanDecreaseGini'],2))

# Create a rank variable based on importance rankImportance <- varImportance %>% mutate(Rank = paste0('#',dense_rank(desc(Importance))))

# Use ggplot2 to visualize the relative importance of variables ggplot(rankImportance, aes(x = reorder(Variables, Importance), y = Importance, fill = Importance)) + geom_bar(stat='identity') + geom_text(aes(x = Variables, y = 0.5, label = Rank), hjust=0, vjust=0.55, size = 4, colour = 'red') + labs(x = 'Variables') + coord_flip() + theme_few()

# Predict using the test set prediction <- predict(rf_model, test)

# Save the solution to a dataframe with two columns: date and rain (prediction) solution <- data.frame(WeatherID = test$date, rain = prediction)

# Write the solution to file write.csv(solution, file = 'rf_mod_Solution.csv', row.names = F)

------------this is my dataset

date	temp	dew_pt	hum	wind_spd	wind_gust	dir	vis	pressure	wind_chill	heat_index	precip	cond	scattered_clouds	clear	mostly_cloudy	overcast	fog	rain	snow	hail	thunder	tor0do
4/28/18 0:15	51.6	48.2	88	0	0	North	7	29.78	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 0:35	51.8	48.7	89	0	0	North	7	29.79	0	0	0	Clear	0	1	0	0	0	0	0	0	0	0
4/28/18 0:55	51.8	48.6	89	0	0	North	7	29.79	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 1:15	51.4	48.2	89	0	0	North	10	29.8	0	0	0	Mostly Cloudy	0	0	1	0	0	0	0	0	0	0
4/28/18 1:35	51.1	48.2	90	0	0	North	10	29.8	0	0	0	Mostly Cloudy	0	0	1	0	0	0	0	0	0	0
4/28/18 1:55	50.9	48.2	90	0	0	North	7	29.79	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 2:15	50.5	47.7	90	0	0	North	7	29.79	0	0	0	Clear	0	1	0	0	0	0	0	0	0	0
4/28/18 2:35	48.7	46.2	91	0	0	North	3	29.79	0	0	0	Clear	0	1	0	0	0	0	0	0	0	0
4/28/18 2:55	49.8	47.5	92	0	0	North	5	29.8	0	0	0	Mostly Cloudy	0	0	1	0	0	0	0	0	0	0
4/28/18 3:15	50.9	48.6	92	0	0	North	5	29.81	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 3:35	50.7	48.2	91	0	0	North	5	29.81	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 3:55	50	47.5	91	0	0	North	5	29.8	0	0	0	Mostly Cloudy	0	0	1	0	0	0	0	0	0	0
4/28/18 4:15	50.5	48.2	92	0	0	North	7	29.78	0	0	0	Mostly Cloudy	0	0	1	0	0	0	0	0	0	0
4/28/18 4:35	50	47.7	92	0	0	North	5	29.78	0	0	0	Mostly Cloudy	0	0	1	0	0	0	0	0	0	0
4/28/18 4:55	50.2	48.2	93	0	0	North	4	29.79	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 5:15	50.2	47.8	92	0	0	North	5	29.79	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 5:35	49.8	47.7	92	0	0	North	4	29.8	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 5:55	50	47.8	92	0	0	North	4	29.8	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 6:15	50	47.8	92	0	0	North	3	29.81	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 6:35	50	48.2	94	0	0	North	2.5	29.82	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 6:55	50.4	48.4	93	0	0	North	3	29.83	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 7:15	50.4	48.4	93	0	0	North	3	29.83	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 7:35	50.9	48.7	92	0	0	North	3	29.84	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 7:55	50.9	48.6	92	0	0	North	3	29.84	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 8:15	51.4	49.1	92	0	0	North	3	29.85	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 9:15	52.3	49.8	91	0	0	North	4	29.85	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 9:35	53.6	50.5	89	0	0	North	5	29.85	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 9:55	53.6	50.2	88	0	0	North	5	29.85	0	0	0	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 10:15	55.4	51.1	85	0	0	North	7	29.85	0	0	0	Mostly Cloudy	0	0	1	0	0	0	0	0	0	0
4/28/18 10:35	57.4	52	82	0	0	North	7	29.85	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 10:55	58.8	51.4	76	4.6	0	South	10	29.85	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 11:15	60.1	51.6	74	0	0	North	10	29.85	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 11:35	61	51.1	70	0	0	North	7	29.84	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 11:55	61.5	51.6	70	0	0	North	10	29.83	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 12:15	62.6	52	68	0	0	North	10	29.83	0	0	0	Mostly Cloudy	0	0	1	0	0	0	0	0	0	0
4/28/18 12:35	64.8	52	63	10.4	0	SSE	10	29.83	0	0	0	Mostly Cloudy	0	0	1	0	0	0	0	0	0	0
4/28/18 12:55	63.7	51.4	64	10.4	0	SE	10	29.82	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 13:15	64.4	51.6	63	8.1	0	SSE	10	29.82	0	0	0	Clear	0	1	0	0	0	0	0	0	0	0
4/28/18 13:35	64.9	51.4	62	9.2	0	SSE	10	29.82	0	0	0	Clear	0	1	0	0	0	0	0	0	0	0
4/28/18 13:55	64.8	51.3	62	8.1	0	SSE	10	29.82	0	0	0	Clear	0	1	0	0	0	0	0	0	0	0
4/28/18 14:15	65.1	50.9	60	9.2	0	SE	10	29.81	0	0	0	Clear	0	1	0	0	0	0	0	0	0	0
4/28/18 14:35	63	50.2	63	11.5	0	SE	10	29.81	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 14:55	63	49.8	62	10.4	0	SE	10	29.8	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 15:15	65.1	49.6	57	12.7	0	ESE	10	29.79	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 15:35	66	49.1	54	12.7	0	SSE	10	29.78	0	0	0	Clear	0	1	0	0	0	0	0	0	0	0
4/28/18 16:15	66.2	48.9	54	10.4	0	SSE	10	29.76	0	0	0	Clear	0	1	0	0	0	0	0	0	0	0
4/28/18 16:35	64.4	48.6	56	10.4	16.1	SSE	10	29.75	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 16:55	60.3	50.5	70	12.7	0	SE	5	29.76	0	0	0.03	Rain	0	0	0	0	0	1	0	0	0	0
4/28/18 17:15	59	50.7	74	9.2	0	SE	10	29.75	0	0	0	Light Rain	0	0	0	0	0	1	0	0	0	0
4/28/18 17:35	59.9	50.2	70	12.7	17.3	SE	10	29.74	0	0	0	Mostly Cloudy	0	0	1	0	0	0	0	0	0	0
4/28/18 17:55	59.4	50.2	72	6.9	0	SE	10	29.74	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 18:15	60.6	50.4	69	6.9	0	SSE	10	29.73	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 18:35	61.3	50.2	67	10.4	0	SSE	10	29.73	0	0	0	Mostly Cloudy	0	0	0	0	0	0	0	0	0	0
4/28/18 19:15	57.2	50	77	8.1	0	SSE	10	29.73	0	0	0	Scattered Clouds	1	0	0	0	0	0	0	0	0	0
4/28/18 19:35	58.1	50.5	76	15	31.1	NNW	10	29.81	0	0	0	Rain	0	0	0	0	0	1	0	0	0	0
4/28/18 19:55	55.2	50.2	83	10.4	0	North	5	29.83	0	0	0.04	Light Rain	0	0	0	0	0	1	0	0	0	0
4/28/18 20:55	54.5	50.7	87	5.8	0	North	4	29.86	0	0	0.08	Rain	0	0	0	0	0	1	0	0	0	0
4/28/18 21:15	54.5	50.9	88	4.6	0	NE	7	29.85	0	0	0.01	Light Rain	0	0	0	0	0	1	0	0	0	0
4/28/18 21:35	54.3	51.1	89	0	0	North	7	29.86	0	0	0.02	Rain	0	0	0	0	0	1	0	0	0	0
4/28/18 21:55	54.5	51.1	88	0	0	North	7	29.86	0	0	0.03	Light Rain	0	0	0	0	0	1	0	0	0	0
4/28/18 22:15	54.5	50.9	88	8.1	0	East	10	29.85	0	0	0.02	Light Rain	0	0	0	0	0	1	0	0	0	0
4/28/18 22:35	54.5	50.9	88	0	0	North	10	29.86	0	0	0.02	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 22:55	54.5	50.4	86	0	0	North	10	29.88	0	0	0.02	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 23:15	54.5	50.9	88	0	0	North	7	29.89	0	0	0.01	Rain	0	0	0	0	0	1	0	0	0	0
4/28/18 23:35	54.1	51.1	89	0	0	North	10	29.9	0	0	0.01	Overcast	0	0	0	1	0	0	0	0	0	0
4/28/18 23:55	54	51.1	90	0	0	North	7	29.88	0	0	0.03	Light Rain	0	0	0	0	0	1	0	0	0	0