Assertion failed: (PyArray_NDIM(V5) == 1), function run, file mod.cpp, line 266.

[BabyCodePvt]

When you hit like 50 requests in one second (use j meter for this please) then this library stops the project and shows this error. Assertion failed: (PyArray_NDIM(V5) == 1), function run, file mod.cpp, line 266. Does this mean this library is not good for big projects?. or I am doing something wrong please help me.