The code should skip multiple plugin entry. You can add 20 times the admin plugin but B3 load it one times. I see no reason why B3 should stop or give a special warning.

But if you like i change it to
```python
if name in [plugins[i]['name'] for i in plugins if plugins[i]['name'] == name]:
                if name == 'admin':
                    self.critical('Plugin admin already loaded. Check you main config file')
                    raise SystemExit(220)
                else:
                    self.warning('Plugin %s already loaded. Avoid multiple entries of the same plugin.' % name)
```