Issue in prob.solve() --cell 30

[Nd-sole]

I am trying to reimplement code in your notebooks. I get the error "PulpSolverError: Pulp: Error while executing /usr/local/lib/python3.6/dist-packages/pulp/solverdir/cbc/linux/64/cbc"
I tried checking the installations which seems to be fine. Can you suggest what might be the issue?

[gorgigithub]

I have probably the same error as nainadhingra2012 when trying to run the code. It gives me this:

---

PulpSolverError Traceback (most recent call last)
in ()
1 # The problem is solved using PuLP's choice of Solver
----> 2 prob.solve()

~/anaconda3/lib/python3.6/site-packages/pulp/pulp.py in solve(self, solver, **kwargs)
1711 """
1712
-> 1713 if not(solver): solver = self.solver
1714 if not(solver): solver = LpSolverDefault
1715 wasNone, dummyVar = self.fixObjective()

~/anaconda3/lib/python3.6/site-packages/pulp/solvers.py in actualSolve(self, lp, **kwargs)
1410 def available(self):
1411 """True if the solver is available"""
-> 1412 return self.executable(self.path)
1413
1414 def solve_CBC(self, lp, use_mps=True):

~/anaconda3/lib/python3.6/site-packages/pulp/solvers.py in solve_CBC(self, lp, use_mps)
1484 self.readsol_MPS(tmpSol, lp, lp.variables(), variablesNames, constraintsNames)
1485 lp.assignVarsVals(values)
-> 1486 lp.assignVarsDj(reducedCosts)
1487 lp.assignConsPi(shadowPrices)
1488 lp.assignConsSlack(slacks, activity=True)

PulpSolverError: Pulp: Error while executing /home/gorgi/anaconda3/lib/python3.6/site-packages/pulp/solverdir/cbc/linux/64/cbc