Crash with odd "jack" error

[tranzmatt]

When trying to run on a Jetson Xavier NX (ubuntu 18.04), I'm getting a weird error. Is this an srsLTE thing?

root@482ef86740d8:/srsLTE/build# srsenb
---  Software Radio Systems LTE eNodeB  ---

Reading configuration file /etc/srslte/enb.conf...
WARNING: cpu0 scaling governor is not set to performance mode. Realtime processing could be compromised. Consider setting it to performance mode before running the application.

Built in Release mode using commit fd5cde525 on branch HEAD.

Opening 1 channels in RF device=default with args=default
linux; GNU C++ version 7.3.0; Boost_106501; UHD_003.010.003.000-0-unknown

Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
[WARNING] SoapySSDPEndpoint failed join group udp://[ff02::c]:1900
  setsockopt(IPV6_ADD_MEMBERSHIP) [19: No such device]
Soapy has found device #0: default_input=False, default_output=False, device_id=4, driver=audio, label=hw:jetson-xaviernx-ape,0,
Soapy has found device #1: default_input=False, default_output=False, device_id=5, driver=audio, label=hw:jetson-xaviernx-ape,1,
Soapy has found device #2: default_input=False, default_output=False, device_id=6, driver=audio, label=hw:jetson-xaviernx-ape,2,
Soapy has found device #3: default_input=False, default_output=False, device_id=7, driver=audio, label=hw:jetson-xaviernx-ape,3,
Soapy has found device #4: default_input=False, default_output=False, device_id=8, driver=audio, label=hw:jetson-xaviernx-ape,4,
Soapy has found device #5: default_input=False, default_output=False, device_id=9, driver=audio, label=hw:jetson-xaviernx-ape,5,
Soapy has found device #6: default_input=False, default_output=False, device_id=10, driver=audio, label=hw:jetson-xaviernx-ape,6,
Soapy has found device #7: default_input=False, default_output=False, device_id=11, driver=audio, label=hw:jetson-xaviernx-ape,7,
Soapy has found device #8: default_input=False, default_output=False, device_id=12, driver=audio, label=hw:jetson-xaviernx-ape,8,
Soapy has found device #9: default_input=False, default_output=False, device_id=13, driver=audio, label=hw:jetson-xaviernx-ape,9,
Soapy has found device #10: default_input=False, default_output=False, device_id=14, driver=audio, label=hw:jetson-xaviernx-ape,10,
Soapy has found device #11: default_input=False, default_output=False, device_id=15, driver=audio, label=hw:jetson-xaviernx-ape,11,
Soapy has found device #12: default_input=False, default_output=False, device_id=16, driver=audio, label=hw:jetson-xaviernx-ape,12,
Soapy has found device #13: default_input=False, default_output=False, device_id=17, driver=audio, label=hw:jetson-xaviernx-ape,13,
Soapy has found device #14: default_input=False, default_output=False, device_id=18, driver=audio, label=hw:jetson-xaviernx-ape,14,
Soapy has found device #15: default_input=False, default_output=False, device_id=19, driver=audio, label=hw:jetson-xaviernx-ape,15,
Soapy has found device #16: default_input=False, default_output=False, device_id=20, driver=audio, label=hw:jetson-xaviernx-ape,16,
Soapy has found device #17: default_input=False, default_output=False, device_id=21, driver=audio, label=hw:jetson-xaviernx-ape,17,
Soapy has found device #18: default_input=False, default_output=False, device_id=22, driver=audio, label=hw:jetson-xaviernx-ape,18,
Soapy has found device #19: default_input=False, default_output=False, device_id=23, driver=audio, label=hw:jetson-xaviernx-ape,19,
Soapy has found device #20: default_input=False, default_output=False, device_id=24, driver=audio, label=default,
Soapy has found device #21: driver=uhd, label=B200mini 31BA182, name=B200mini, product=B200mini, serial=31BA182, type=b200,
Selecting Soapy device: 0
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
Cannot connect to server socket err = No such file or directory
Cannot connect to server request channel
jack server is not running or cannot be started
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
JackShmReadWritePtr::~JackShmReadWritePtr - Init not done for -1, skipping unlock
terminate called after throwing an instance of 'std::logic_error'
  what():  basic_string::_M_construct null not valid
srsLTE crashed... backtrace saved in './srsLTE.backtrace.crash'...
---  exiting  ---