Transform error in pgoOdom

[mar-watt]

Hi,

After running sc-a-loam for a few minutes, all of a sudden I get the following error (keeps repeating until process is closed):
Saving the posegraph ... running isam2 optimization ... Saving the posegraph ... running isam2 optimization ... Saving the posegraph ... [ERROR] [1658300918.247001921]: Error transforming odometry 'pgoOdom' from frame '/camera_init' to frame 'camera_init' [ERROR] [1658300918.342610283]: Error transforming odometry 'pgoOdom' from frame '/camera_init' to frame 'camera_init' [ERROR] [1658300918.437678957]: Error transforming odometry 'pgoOdom' from frame '/camera_init' to frame 'camera_init' [ERROR] [1658300918.534470309]: Error transforming odometry 'pgoOdom' from frame '/camera_init' to frame 'camera_init'
I've tried renaming the the camera_init topic in laserPosegraphOptimization.cpp without the leading '/', to no avail.
Any ideas on what the issue might be?