Fixing UnicodeEncodeError in sql panel

Author: maraujop

debug_toolbar/panels/sql.py

@@ -194,7 +194,7 @@ def content(self):
                 stacktrace = []
                 for frame in query['stacktrace']:
                     params = map(escape, frame[0].rsplit('/', 1) + list(frame[1:]))
-                    stacktrace.append('<span class="path">{0}/</span><span class="file">{1}</span> in <span class="func">{3}</span>(<span class="lineno">{2}</span>)\n  <span class="code">{4}</span>'.format(*params))
+                    stacktrace.append(u'<span class="path">{0}/</span><span class="file">{1}</span> in <span class="func">{3}</span>(<span class="lineno">{2}</span>)\n  <span class="code">{4}</span>'.format(*params))
                 query['stacktrace'] = mark_safe('\n'.join(stacktrace))
                 i += 1