Problems encountered by simulation

Dear all,
Hello, I am the new MFIX software. I am doing a DEM 2D simulation of binary particles in a fluidized bed. ERROR des\ read_PARTICle_input. f:87 will occur when I use the method set in ZIP for simulation. I looked up previous issues that readers had encountered in the Discussion Forum and modified them with their methods, but they still couldn’t solve them. Please give me some advice.
Thanks.
2d.zip (3.7 MB)

Please include your particle_input.dat file.

Sorry,I don’t have the particle_input.dat file in my folder, how do I set up to create this file?Isn’t that automatically generated?

Please see 8.4. Frequently Asked Questions — MFiX 20.3.1 documentation