INFO:pathspider:Creating observerbrd ff:ff:ff:ff:ff:ff mss < pathspid Traceback (most recent call last):senv$ pspdr measure -i enp0s25 mss < pathspider/examples/webtest.ndjson >results.txt File "/home/ergadmin/psenv/bin/pspdr", line 11, in <module> load_entry_point('pathspider', 'console_scripts', 'pspdr')() File "/home/ergadmin/psenv/pathspider/pathspider/cmd/base.py", line 62, in handle_args_wrapper handle_args(sys.argv) File "/home/ergadmin/psenv/pathspider/pathspider/cmd/base.py", line 57, in handle_args args.cmd(args) File "/home/ergadmin/psenv/pathspider/pathspider/cmd/measure.py", line 87, in run_measurement spider.start() File "/home/ergadmin/psenv/pathspider/pathspider/base.py", line 399, in start self.observer = self.create_observer() File "/home/ergadmin/psenv/pathspider/pathspider/base.py", line 160, in create_observer chains=self.chains) # pylint: disable=no-member File "/home/ergadmin/psenv/pathspider/pathspider/observer.py", line 88, in __init__ import plt as libtrace ImportError: /home/ergadmin/psenv/lib/python3.7/site-packages/plt.cpython-37m-x86_64-linux-gnu.so: undefined symbol: SctpType