# make inverse operator : SVD did not converge

**URL:** <https://mne.discourse.group/t/make-inverse-operator-svd-did-not-converge/8544>\
**Category:** Support & Discussions\
**Created:** [March 25, 2024, 2:35am UTC](https://mne.discourse.group/t/make-inverse-operator-svd-did-not-converge/8544 "2024-03-25T02:35:03Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![ling](https://avatars.discourse-cdn.com/v4/letter/l/c2a13f/32.png) [@ling](https://mne.discourse.group/u/ling)\
**Post date:** [March 25, 2024, 2:35am UTC](https://mne.discourse.group/t/make-inverse-operator-svd-did-not-converge/8544/1 "2024-03-25T02:35:04Z")

</div>

```python
---------------------------------------------------------------------------
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

```