Traceback error

[akashkbaburajan]

When executing the command ./droidbox.sh <apk_file_name> I am getting the following error. Could you please tell me what is wrong and how I can correct it?

Traceback (most recent call last):
File "scripts/droidbox.py", line 516, in
main(sys.argv)
File "scripts/droidbox.py", line 318, in main
ret = call(['monkeyrunner', 'monkeyrunner.py', apkName, packageName, mainActivity], stderr=PIPE, cwd=os.path.dirname(os.path.realpath(file)))
File "/usr/lib/python2.7/subprocess.py", line 523, in call
return Popen(*popenargs, **kwargs).wait()
File "/usr/lib/python2.7/subprocess.py", line 711, in init
errread, errwrite)
File "/usr/lib/python2.7/subprocess.py", line 1343, in _execute_child
raise child_exception
OSError: [Errno 2] No such file or directory

Thank you !