RuntimeError: Reference Clock PLL failed to lock to external source.

[BouazzaEhm]

##Cant launch the eNB in NSA mode ##
When trying to run the eNB i get the following error
/home/rt2024/srsRAN_4G/lib/src/phy/rf/rf_uhd_imp.cc:932: uhd_init failed, freeing...
[ERROR] [UHD RF] RuntimeError: Reference Clock PLL failed to lock to external source.
Error initializing radio.

Setup Details

running on ubuntu 22 with an usrp X310 using PCI express

Expected Behavior

eNB Launching

Actual Behaviour

[ERROR] [UHD RF] RuntimeError: Reference Clock PLL failed to lock to external source.
Error initializing radio.

Steps to reproduce the problem

reproducing this https://docs.srsran.com/projects/4g/en/next/app_notes/source/5g_nsa_cots/source/index.html#introduction