ODE singularity problem for simulation

Capture d’écran 2021-05-15 010932

hi friends, could anyone here give me any ideas to fix this ODE problem, the methods of Runge Kutta and Euler fail due to the singularity issue

Thank you !!!
Capture d’écran 2021-05-15 011706

Can you elaborate on what the problem your are trying to solve is in your own words?
Are you getting an error when trying to solve an ODE, and what is the differential equation itself?