oonireport doesn't detect/upload reports

It seems that oonireport doesnt detect or upload any reports:

# ls -1 *yamloo |wc -l
59

# oonireport -f /etc/ooniprobe/oonireport.conf status  
Reports to be uploaded
----------------------
Reports in progress
-------------------
Incomplete reports
------------------

# oonireport -f /etc/ooniprobe/oonireport.conf upload
[no output]