帮忙看一下这段Python代码为什么报错？

for i in range(1, 7042):
    if df['time'] < df['EndSeries']:
        adding = df.iloc[i]
        adding.column = df.column
        adding['time'] += 1
        df = df.append(adding, ignore_index=True)

我想完成这样的操作：判断每一行数据中time是否小于endseries，如果是，就把这一行复制下来添加到这个dataframe里边，并把time改成time+1

报错内容：

ValueError                                Traceback (most recent call last)
<ipython-input-81-12a8457f1209> in <module>
      1 i = 1
----> 2 if df['time'] < df['EndSeries']:
      3         adding = df.iloc[i]
      4         adding.column = df.column
      5         adding['time'] += 1

c:\users\swift\appdata\local\programs\python\python38\lib\site-packages\pandas\core\generic.py in __nonzero__(self)
   1327 
   1328     def __nonzero__(self):
-> 1329         raise ValueError(
   1330             f"The truth value of a {type(self).__name__} is ambiguous. "
   1331             "Use a.empty, a.bool(), a.item(), a.any() or a.all()."

ValueError: The truth value of a Series is ambiguous. Use a.empty, a.bool(), a.item(), a.any() or a.all().