Running version: 1.3.6.42#dev
Python version: 2.7.10
Operating system: Darwin-18.6.0-x86_64-i386-64bit
Command line: sqlmap.py --update
Technique: None
Back-end DBMS: None

Traceback (most recent call last):
  File "sqlmap.py", line 159, in main
    init()
  File "lib/core/option.py", line 2634, in init
    update()
  File "lib/core/update.py", line 117, in update
    output = getText(output)
UnboundLocalError: local variable 'output' referenced before assignment