how to solve socket connect failed for: /tmp/osm-renderd

Hi buds !

I'm getting this error while trying to pre-render tiles ... I fetched Corsica to give it a try, i could import ... ... The problem i when i'm running render_list

Here is the log:

osm@osm-server:~$ sudo render_list -a -f –z 18 -Z 18 x 8.5 X 9.8 y 43.03 Y 41.34 -      socket=/var/run/renderd/renderd.sock
Rendering client
Planet timestamp file (/var/lib/mod_tile//planet-import-complete) is missing
Starting 1 rendering threads
Rendering all tiles from zoom 0 to zoom 18
Rendering all tiles for zoom 0 from (0, 0) to (0, 0)
Rendering all tiles for zoom 1 from (0, 0) to (1, 1)
Rendering all tiles for zoom 2 from (0, 0) to (3, 3)
Rendering all tiles for zoom 3 from (0, 0) to (7, 7)
Rendering all tiles for zoom 4 from (0, 0) to (15, 15)
Rendering all tiles for zoom 5 from (0, 0) to (31, 31) 
Rendering all tiles for zoom 6 from (0, 0) to (63, 63)
socket connect failed for: /tmp/osm-renderd

i think getting the error "planet timestamp file ..." is normal since is just downloaded the Corsica .. ( ? ) ps : i'm running on a virtual machine under ubuntu (18 allocated), since corsica is a pretty small area, i think this is enough .. or i hope this is enough ..

My first thought was that i didn't have the permissions for /var/ru/rendered/renderd.sock, i did a chmod .. didn't change anything .. My tile's folder is /var/lib/mod_tile (default)

Thank you for reading and helping, Regards, Guillaume.