when run openvas-check-setup --v9 ,show a warning and suggest:
Step 8: Checking nmap installation …
WARNING: Your version of nmap is not fully supported: 7.70
SUGGEST: You should install nmap 5.51 if you plan to use the nmap NSE NVTs.
As I already mentioned in the other thread the openvas-check-setup script is deprecated. The nmap check hasn’t been updated for quite some time and therefore issues a warning for “newer” versions. Your nmap version should be supported.