Running version: 1.4.10.28#dev
Python version: 2.7.18
Operating system: Linux-5.7.0-kali1-686-pae-i686-with-debian-kali-rolling
Command line: /usr/bin/sqlmap --sqlmap-shell
Technique: None
Back-end DBMS: Microsoft SQL Server (identified)

Traceback (most recent call last):
  File "sqlmap", line 215, in main
    start()
  File "/share/sqlmap/lib/core/decorators.py", line 78, in _
    result = f(*args, **kwargs)
  File "/share/sqlmap/lib/controller/controller.py", line 301, in start
    for targetUrl, targetMethod, targetData, targetCookie, targetHeaders in kb.targets:
  File "/share/sqlmap/lib/core/option.py", line 432, in next
    line = next(conf.stdinPipe)
TypeError: unicode object is not an iterator