SU2 pyamg issue

[Andre174201]

Hy, I am Andrea.
It has been a few days that I am dealing with the pyamg extensions.
I am trying to run a case of mine, but I am not able to fix this error:
python3 $SU2_RUN/mesh_adaptation_amg.py -f adap_NACA0012.cfg -n 8
SU2-AMG Anisotropic Mesh Adaptation

Mesh adaptation options:
PYADAP_COMPLEXITY : (30000, 60000, 120000)
PYADAP_SUBITE : (3, 3, 3)
PYADAP_SENSOR : MACH
PYADAP_HMAX : 500.0
PYADAP_HMIN : 1e-9
PYADAP_HGRAD : 1.8
PYADAP_FLOW_ITER : (2999, 4999, 6999)

./adap exists. Removing old mesh adaptation in 10s.
The ./adap folder was deleted

Generating GMF background surface mesh.

WARNING: MISSING SU2 MESH FILE KEYWORD: NCORNERS=.

Running initial CFD solution.

Starting mesh adaptation process.

Iteration 0 - Mesh size coefficient 30000.0

WARNING: MISSING SU2 MESH FILE KEYWORD: NCORNERS=.

(1/3) Generating adapted mesh using AMG
AMG done:
Running CFD
Traceback (most recent call last):
File "/home/andrea/Codes/SU2_pyamg/SU2_bin/bin/mesh_adaptation_amg.py", line 111, in
main()
File "/home/andrea/Codes/SU2_pyamg/SU2_bin/bin/mesh_adaptation_amg.py", line 72, in main
options.save_all )
File "/home/andrea/Codes/SU2_pyamg/SU2_bin/bin/mesh_adaptation_amg.py", line 101, in mesh_adaptation_amg
SU2.run.amg(config)
File "/home/andrea/Codes/SU2_pyamg/SU2_bin/bin/SU2/run/amg.py", line 466, in amg
os.rename(cur_solfil, cur_solfil_ini)
FileNotFoundError: [Errno 2] No such file or directory: 'flo.dat' -> 'flo_ini.dat'

Anybody has any ideas?
Thank you