Traceback (most recent call last):
  File "scraper_et.py", line 292, in crawl
    try:
IndexError: list index out of range
Traceback (most recent call last):
  File "scraper_et.py", line 255, in crawl
    response=session.get(new_urls[ml][i]).content.decode("UTF-8")
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xf7 in position 2: invalid start byte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "scraper_et.py", line 264, in crawl
    if(retry_count>=retry_limit):
NameError: name 'retry_limit' is not defined