Error question regarding rename file in Python folder. FileNotFoundError

There is a problem if the name is too long in the folder, so I am working on a code that changes it at once. An error has occurred.

import os
import pathlib




p_dir =  './data/'

for file in os.listdir(p_dir):
    file_name = file
    oldname = str(file_name)
    newname1 = file.split('_')[5] + '_SmmLogs.zip'
    newname = str(newname1)
    os.rename(oldname, newname)

I tried it like this, but I don't think there's a problem

Traceback (most recent call last):
  File "d:/Coding/name/namechange.py", line 15, in <module>
    os.rename(oldname, newname)
FileNotFoundError: [WinError 2] 指定されたファイルが見つかりません。: 'PN8B744_M0001_NewMDCR_4x4mmP_AllatOnce_20220328000119153_SmmLogs.zip' -> '20220328000119153_SmmLogs.zip'

定さたファイルつかり 지정된まんせ : 파일을 찾을습니다: The specified file could not be found.

I see this error. Is there any way?

python

2022-09-20 10:54