not working

[callmevirus]

[^] Running component level check
[^] Starting engine
[^] Turning on radar
[!] 1 targets were caught on radar.
Traceback (most recent call last):
File "striker.py", line 58, in
open_ports = portscanner([(ip, port) for port in var('ports')])
File "/root/Striker/modules/portscanner.py", line 16, in portscanner
for i in concurrent.futures.as_completed(futures):
File "/usr/lib/python3.7/concurrent/futures/_base.py", line 217, in as_completed
fs = set(fs)
File "/root/Striker/modules/portscanner.py", line 15, in
futures = (threadpool.submit(scan, target, result) for target in targets)
File "/usr/lib/python3.7/concurrent/futures/thread.py", line 172, in submit
self._adjust_thread_count()
File "/usr/lib/python3.7/concurrent/futures/thread.py", line 193, in _adjust_thread_count
t.start()
File "/usr/lib/python3.7/threading.py", line 852, in start
_start_new_thread(self._bootstrap, ())
RuntimeError: can't start new thread