Ligand Parameter with Charmm force field

I uploaded my ligand in the cgenff server and got a .str file. When I tried to converted my mol2 and str file using the python script. A warning occured that the force field versions are inconsistent. However, from the Mackerell labsite, I can only see charmm36-july2021.ff and charmm36-feb2021.ff, which corresponds to cgenff 4.6 and 4.4 respectively. Does anyone know where can I find cgenff 4.5?

There isn’t a port that matches version 4.5 of CGenFF, and often the server is behind in its versioning. Check the CGenFF release notes to see if any of the changes from 4.5 to 4.6 affect your parameters, and if not, bypass the warning about mismatching versions.