Not a mixed-integer problem

[phil622]

I use carveme to generate model and run smetana with --solver CPLEX
however ,it return this error:
Loading community: all
Running SCS for community all on medium M9...
Running MUS for community all on medium M9...
Traceback (most recent call last):
File "/public1/home/chenwy/app/miniconda3/envs/smetana_env/bin/smetana", line 468, in
ignore_coupling=args.no_coupling,
File "/public1/home/chenwy/app/miniconda3/envs/smetana_env/bin/smetana", line 346, in main
ignore_coupling)
File "/public1/home/chenwy/app/miniconda3/envs/smetana_env/bin/smetana", line 178, in run_detailed
min_mol_weight=min_mol_weight)
File "/public1/home/chenwy/app/miniconda3/envs/smetana_env/lib/python3.6/site-packages/smetana/smetana.py", line 154, in metabolite_uptake_score
warnings=False)
File "/public1/home/chenwy/app/miniconda3/envs/smetana_env/lib/python3.6/site-packages/framed/experimental/medium.py", line 195, in minimal_medium
pool_size=n_solutions, pool_gap=pool_gap)
File "/public1/home/chenwy/app/miniconda3/envs/smetana_env/lib/python3.6/site-packages/framed/solvers/cplex_interface.py", line 366, in solve
problem.populate_solution_pool()
File "/public1/home/chenwy/app/miniconda3/envs/smetana_env/lib/python3.6/site-packages/cplex/init.py", line 1152, in populate_solution_pool
_proc.populate(self._env._e, self._lp)
File "/public1/home/chenwy/app/miniconda3/envs/smetana_env/lib/python3.6/site-packages/cplex/_internal/_procedural.py", line 818, in populate
check_status(env, status)
File "/public1/home/chenwy/app/miniconda3/envs/smetana_env/lib/python3.6/site-packages/cplex/_internal/_procedural.py", line 303, in call
raise CplexSolverError(error_string, env, status)
cplex.exceptions.errors.CplexSolverError: CPLEX Error 3003: Not a mixed-integer problem.

What can i do for this

my smetana is 1.0.0
cplex 12.8
python 3.6.2