make inverse operator : SVD did not converge

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LinAlgError                               Traceback (most recent call last)
Cell In[4], line 121
    118 singleevent = 0 # list start from 0 
    119 while singleevent <= eventnum:
    120     ## step 4 inverse      
--> 121     inverse_operator = make_inverse_operator(
    122         evoked[singleevent].info, fwd, noise_cov, loose=0.2, depth=0.8
    123     )
    124     method = "dSPM"
    125     snr = 3.0

error message:
LinAlgError: SVD did not converge