Repository: spyder-ide/spyder

Issue:
TypeError: string indices must be integers, not 'str'
## Description

### What steps will reproduce the problem?

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TypeError: string indices must be integers, not 'str'

### Traceback
```python-traceback
Traceback (most recent call last):
  File "C:\Users\physics\anaconda3\envs\spyder-env\Lib\site-packages\spyder\workers\updates.py", line 119, in start
    channel, channel_url = get_spyder_conda_channel()
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\physics\anaconda3\envs\spyder-env\Lib\site-packages\spyder\utils\conda.py", line 232, in get_spyder_conda_channel
    if package_info["name"] == 'spyder':
       ~~~~~~~~~~~~^^^^^^^^
TypeError: string indices must be integers, not 'str'
```

## Versions

* Spyder version: 5.5.4  (conda)
* Python version: 3.12.3 64-bit
* Qt version: 5.15.8
* PyQt5 version: 5.15.9
* Operating System: Windows-10-10.0.19045-SP0

### Dependencies

```
# Mandatory:
atomicwrites >=1.2.0             :  1.4.1 (OK)
chardet >=2.0.0                  :  5.2.0 (OK)
cloudpickle >=0.5.0              :  3.0.0 (OK)
cookiecutter >=1.6.0             :  2.6.0 (OK)
diff_match_patch >=20181111      :  20230430 (OK)
intervaltree >=3.0.2             :  3.1.0 (OK)
IPython >=8.13.0,<9.0.0,!=8.17.1 :  8.22.2 (OK)
jedi >=0.17.2,<0.20.0            :  0.19.1 (OK)
jellyfish >=0.7                  :  1.0.3 (OK)
jsonschema >=3.2.0               :  4.21.1 (OK)
keyring >=17.0.0                 :  25.1.0 (OK)
nbconvert >=4.0                  :  7.16.3 (OK)
numpydoc >=0.6.0                 :  1.7.0 (OK)
paramiko >=2.4.0                 :  3.4.0 (OK)
parso >=0.7.0,<0.9.0             :  0.8.4 (OK)
pexpect >=4.4.0                  :  4.9.0 (OK)
pickleshare >=0.4                :  0.7.5 (OK)
psutil >=5.3                     :  5.9.8 (OK)
pygments >=2.0                   :  2.17.2 (OK)
pylint >=3.1,<4                  :  3.1.0 (OK)
pylint_venv >=3.0.2              :  3.0.3 (OK)
pyls_spyder >=0.4.0              :  0.4.0 (OK)
pylsp >=1.11.0,<1.12.0           :  1.11.0 (OK)
pylsp_black >=2.0.0,<3.0.0       :  2.0.0 (OK)
qdarkstyle >=3.2.0,<3.3.0        :  3.2.3 (OK)
qstylizer >=0.2.2                :  0.2.2 (OK)
qtawesome >=1.3.1,<1.4.0         :  1.3.1 (OK)
qtconsole >=5.5.1,<5.6.0         :  5.5.1 (OK)
qtpy >=2.1.0                     :  2.4.1 (OK)
rtree >=0.9.7                    :  1.2.0 (OK)
setuptools >=49.6.0              :  69.5.1 (OK)
sphinx >=0.6.6                   :  7.2.6 (OK)
spyder_kernels >=2.5.1,<2.6.0    :  2.5.1 (OK)
textdistance >=4.2.0             :  4.5.0 (OK)
three_merge >=0.1.1              :  0.1.1 (OK)
watchdog >=0.10.3                :  4.0.0 (OK)
zmq >=24.0.0                     :  26.0.0 (OK)

# Optional:
cython >=0.21                    :  3.0.10 (OK)
matplotlib >=3.0.0               :  3.8.4 (OK)
numpy >=1.7                      :  1.26.4 (OK)
pandas >=1.1.1                   :  None (NOK)
scipy >=0.17.0                   :  1.13.0 (OK)
sympy >=0.7.3                    :  None (NOK)
```



Discussion:

Resolving patch:
diff --git a/spyder/utils/conda.py b/spyder/utils/conda.py
--- a/spyder/utils/conda.py
+++ b/spyder/utils/conda.py
@@ -228,6 +228,10 @@ def get_spyder_conda_channel():
     except Exception:
         return None, None
 
+    # Avoids iterating over non-dict objects
+    if 'error' in out:
+        return None, None
+
     for package_info in out:
         if package_info["name"] == 'spyder':
             channel = package_info["channel"]


Test patch: