In a Databricks notebook with Python as the default language, the following sequence of commands is executed. Which command will be the first to return an error when run in sequence?

data = dbutils.fs.ls(‘.‘)
list1 = ['']
list1.append(data)
%pip install pandas
import pandas as pd
df = pd.DataFrame(list1)
%pip uninstall pandas

data = dbutils.fs.ls(‘.‘)
list1 = ['']
list1.append(data)
%pip install pandas
import pandas as pd
df = pd.DataFrame(list1)
%pip uninstall pandas