ValueError: cannot index with vector containing NA / NaN values : <p>I do not understand why I am receiving the error listed in the title, the value that I am intending to return is the number 30</p>

<pre><code>import csv
import os
import pandas as pd
os.chdir('C:\\Users\\khalha\\Desktop\\RealExcel')
filename = 'sales.csv'

Sales = pd.read_csv('sales.csv')
iFlowStatus = Sales[Sales['Product'].str.contains('iFlow')]['Status']
print(iFlowStatus)
</code></pre>
