make error

[macanv]

when i run the script runExample.sh,
following error will be throw:
make: Entering directory /home/ftpmacan/work/BTM/src' g++ -c -pipe -O3 model.cpp -o model.o g++ -c -pipe -O3 infer.cpp -o infer.o g++ -c -pipe -O3 main.cpp -o main.o g++ model.o infer.o main.o -o btm make: Leaving directory /home/ftpmacan/work/BTM/src'
../src/btm est 20 28634 0.005 5 501 ../output/doc_wids.txt ../output/model/
terminate called after throwing an instance of 'std::logic_error'
what(): basic_string::_S_construct NULL not valid
runExample.sh: line 31: 8618 Aborted ../src/btm est $K $W $alpha $beta $niter $save_step $dwid_pt $model_dir