Error "x and y must have same first dimension, but have shapes (20,) and (1,) "

Question

I am trying to plot the accuracy plot. but getting error. code is below.

acc = history.history['acc']
val_acc = history.history['val_acc']
loss = history.history['loss']
val_loss = history.history['val_loss']

epochs = range(len(acc))

plt.plot(epochs, acc, color='blue', label='Training Accuracy')
plt.plot(epochs, val_acc, color='orange', label='Validation Accuracy')
plt.title('Training VS Validation Accuracy')
plt.legend()
plt.show()

plt.plot(epochs, loss, color='blue', label='Training Loss')
plt.plot(epochs, val_loss, color='orange', label='Validation Loss')
plt.title('Training VS Validation Loss')
plt.legend()
plt.show()