我正在使用下面的代码，请参见下面的错误。代码：
please see my data in this link

import pandas as pd
df=pd.read_csv('Ecommerce Customers')
df.head()

X=[['Avg. Session Length', 'Time on App','Time on Website']]

y=['Yearly Amount Spent']

from sklearn.model_selection import train_test_split

X_train, X_test, y_train, y_test = train_test_split( X, y, test_size=0.25, random_state=101)

输出：

ValueError: With n_samples=1, test_size=0.25 and train_size=None, the resulting train set will be empty. Adjust any of the aforementioned parameters.

我在论坛上读到过在这种情况下扩展数据，但我不知道如何做。