Hello everyone,

I am trying to run a script on a computer at my university after correctly activating the fenics module. The output I get is as follows:

```
nohup: ignoring input
Solving linear variational problem.
Evolution of the tumor up to the third cycle of chemo
Computing nutrient initial condition.
Solving CH + nutrient
Traceback (most recent call last):
File "GBM_Besta_33_mox.py", line 409, in <module>
solver.solve(problem, solution1.vector())
RuntimeError:
*** -------------------------------------------------------------------------
*** DOLFIN encountered an error. If you are not able to resolve this issue
*** using the information listed below, you can ask for help at
***
*** fenics-support@googlegroups.com
***
*** Remember to include the error message listed below and, if possible,
*** include a *minimal* running example to reproduce the error.
***
*** -------------------------------------------------------------------------
*** Error: Unable to solve linear system using PETSc Krylov solver.
*** Reason: Solution failed to converge in 0 iterations (PETSc reason DIVERGED_PC_FAILED, residual norm ||r|| = 0.000000e+00).
*** Where: This error was encountered inside PETScKrylovSolver.cpp.
*** Process: 0
***
*** DOLFIN version: 2019.1.0
*** Git changeset:
*** -------------------------------------------------------------------------
```

While compiling that script on my computer I get a correct execution with an iterative process that I expect.

What could be the problem?