MATLAB engine for python - How to build graph with weights

Question

When trying to build the most straightforward graph with weights on Matlab engine with Python -

s1 = ['a', 'b', 'c', 'd'];
t1 = ['b', 'c', 'd', 'e'];
w1 = [10, 20, 30, 40];
g = eng.graph(s1,t1,w1);

I'm getting this error:

MatlabExecutionError                      Traceback (most recent call last)
~\AppData\Local\Temp/ipykernel_15984/3466945527.py in 
      8 t1 = ['b', 'c', 'd', 'e'];
      9 w1 = [10, 20, 30, 40];
---> 10 g = eng.graph(s1,t1,w1);
     11 
     12 

c:\Users\user\anaconda3\lib\site-packages\matlab\engine\matlabengine.py in __call__(self, *args, **kwargs)
     68             return FutureResult(self._engine(), future, nargs, _stdout, _stderr, feval=True)
     69         else:
---> 70             return FutureResult(self._engine(), future, nargs, _stdout,
     71                                 _stderr, feval=True).result()
     72 

c:\Users\user\anaconda3\lib\site-packages\matlab\engine\futureresult.py in result(self, timeout)
     65                 raise TypeError(pythonengine.getMessage('TimeoutCannotBeNegative'))
     66 
---> 67         return self.__future.result(timeout)
     68 
     69     def cancel(self):

c:\Users\user\anaconda3\lib\site-packages\matlab\engine\fevalfuture.py in result(self, timeout)
     80                 raise TimeoutError(pythonengine.getMessage('MatlabFunctionTimeout'))
...
  File C:\Program Files\MATLAB\R2022b\toolbox\matlab\graphfun\+matlab\+internal\+graph\constructFromEdgeList.m, line 256, in constructFromEdgeList

  File C:\Program Files\MATLAB\R2022b\toolbox\matlab\graphfun\@graph\graph.m, line 325, in graph.graph
Graph edge weights must be double or single, real, and not sparse

I tried to change the weight and ensure it was from double format, but nothing worked.