OperationalError: (2006, 'MySQL server has gone away')

```
Automatically imported from Trac.
Originally reported by 'ext' as #136.
```

```
500 Internal Server Error

The server encountered an unexpected condition which prevented it from fulfilling the request.

Traceback (most recent call last):
File "/usr/lib64/python2.7/site-packages/cherrypy/_cprequest.py", line 656, in respond
response.body = self.handler()
File "/usr/lib64/python2.7/site-packages/cherrypy/lib/encoding.py", line 188, in __call__
self.body = self.oldhandler(*args, **kwargs)
File "/usr/lib64/python2.7/site-packages/cherrypy/_cpdispatch.py", line 34, in __call__
return self.callable(*self.args, **self.kwargs)
File "/home/ext/slideshow-src/slideshow/lib/template.py", line 51, in wrapper
stream = func(*args, **kwargs)
File "/home/ext/slideshow-src/slideshow/pages/slides.py", line 41, in list
queues = queue.all(cherrypy.thread_data.db)
File "/home/ext/slideshow-src/slideshow/lib/queue.py", line 51, in all
""").fetchall()]
File "/home/ext/slideshow-src/slideshow/lib/browser/_mysql.py", line 65, in execute
self.func_wrapper(self.cursor.execute, args, kwargs)
File "/home/ext/slideshow-src/slideshow/lib/browser/_mysql.py", line 62, in func_wrapper
return func(*args, **kwargs)
File "/home/ext/slideshow-src/slideshow/lib/browser/_mysql.py", line 21, in execute
return DictCursor.execute(self, query, args)
File "/usr/lib64/python2.7/site-packages/MySQLdb/cursors.py", line 174, in execute
self.errorhandler(self, exc, value)
File "/usr/lib64/python2.7/site-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler
raise errorclass, errorvalue
OperationalError: (2006, 'MySQL server has gone away')
```