I have uploaded all the charmm files and tried running the customised nvt step using Gromacs 2020.4 but I got the error that the forcefield.itp is not available. I have attached the screenshot for better understanding.
Hi @swaroop25
Would you like to share the job itself? This would allow us to see how this input was set up technically on the form. How to share is in the banner of this forum, also here → How to get faster help with your question
Let’s start there, thanks! 