Error during groundwater recharge estimation

[jnsebgosselin]

System Info

GWHAT 0.5.0
Python 3.8.9 64-bit
Qt 5.15.2
PyQt5 5.15.4
Windows 10

Traceback

Traceback (most recent call last):
  File "C:\Users\User\gwhat\gwhat\gwrecharge\gwrecharge_calc2.py", line 198, in eval_recharge
    SyOpt, RMSE, wlvlest = self.optimize_specific_yield(
  File "C:\Users\User\gwhat\gwhat\gwrecharge\gwrecharge_calc2.py", line 349, in optimize_specific_yield
    dr = np.linalg.tensorsolve(XtX, Xtdh, axes=None)
  File "<__array_function__ internals>", line 5, in tensorsolve
  File "C:\Python38\lib\site-packages\numpy\linalg\linalg.py", line 305, in tensorsolve
    res = wrap(solve(a, b))
  File "<__array_function__ internals>", line 5, in solve
  File "C:\Python38\lib\site-packages\numpy\linalg\linalg.py", line 394, in solve
    r = gufunc(a, b, signature=signature, extobj=extobj)
  File "C:\Python38\lib\site-packages\numpy\linalg\linalg.py", line 88, in _raise_linalgerror_singular
    raise LinAlgError("Singular matrix")
numpy.linalg.LinAlgError: Singular matrix