Dense reconstruction / dmrecon problem webodm crashes

Hi I just updated my webodm with latest server install (june 19th I think), running native on ubuntu 16.04.
It starts to run dense reconstruction and I get a bunch of these:

[INFO] running /code/SuperBuild/src/elibs/mve/apps/dmrecon/dmrecon “-s2 --progress=silent --local-neighbors=2” “/www/data/149d7d44-7045-4c12-86dc-c7d26f0956cf/mve”
MVE Depth Map Reconstruction (built on Jul 9 2019, 09:07:57)
terminate called after throwing an instance of ‘std::invalid_argument’
what(): Invalid string conversion: 2 --progress=silent --local-neighbors=2
Aborted (core dumped)
[WARNING] Caught error code, retrying attempt #2

after a few attempts I get:

Loading mesh: /www/data/149d7d44-7045-4c12-86dc-c7d26f0956cf/mve/mve_dense_point_cloud.ply
PLY Loader: comment Export generated by libmve
Reading PLY: 0 verts…
Error: Mesh is empty!
Traceback (most recent call last):
File “/code/”, line 56, in
File “/code/stages/”, line 92, in execute
File “/code/opendm/”, line 373, in run
File “/code/opendm/”, line 373, in run
File “/code/opendm/”, line 373, in run
File “/code/opendm/”, line 373, in run
File “/code/opendm/”, line 354, in run
self.process(self.args, outputs)
File “/code/stages/”, line 143, in process’%s -t%s --no-clean --component-size=0 “%s” “%s”’ % (context.meshclean_path, min(1.0, args.mve_confidence), tree.mve_model, mve_filtered_model), env_vars={‘OMP_NUM_THREADS’: args.max_concurrency})
File “/code/opendm/”, line 76, in run
raise Exception(“Child returned {}”.format(retcode))
Child returned 1

any ideas on how to fix this?