Running version: 1.3.11.36#dev
Python version: 2.7.16+
Operating system: Linux-5.2.0-kali2-amd64-x86_64-with-debian-kali-rolling
Command line: /usr/bin/sqlmap -u ******************************************************************* --forms
Technique: None
Back-end DBMS: None

Traceback (most recent call last):
  File "sqlmap", line 163, in main
    init()
  File "/share/sqlmap/lib/core/option.py", line 2659, in init
    _findPageForms()
  File "/share/sqlmap/lib/core/option.py", line 437, in _findPageForms
    if findPageForms(page, conf.url, True, True):
  File "/share/sqlmap/lib/core/common.py", line 4502, in findPageForms
    elif not re.sub(r"(%s)=[^&]*&?" % '|'.join(IGNORE_PARAMETERS), "", data):
  File "/lib/python2.7/re.py", line 155, in sub
    return _compile(pattern, flags).sub(repl, string, count)
TypeError: expected string or buffer