No module named fiona

[Kalimaha]

Impossibile caricare il plugin geobricks_qgis_plugin_world_bank a causa di un errore chiamando il metodo classFactory()

Traceback (most recent call last):
File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/qgis/utils.py", line 219, in startPlugin
plugins[packageName] = package.classFactory(iface)
File "/Users/simona/.qgis2/python/plugins/geobricks_qgis_plugin_world_bank/init.py", line 34, in classFactory
from .geobricks_qgis_plugin_world_bank import GeobricksQgisPluginWorldBank
File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/qgis/utils.py", line 478, in _import
mod = _builtin_import(name, globals, locals, fromlist, level)
File "/Users/simona/.qgis2/python/plugins/geobricks_qgis_plugin_world_bank/geobricks_qgis_plugin_world_bank.py", line 28, in
import fiona
File "/Applications/QGIS.app/Contents/MacOS/../Resources/python/qgis/utils.py", line 478, in _import
mod = _builtin_import(name, globals, locals, fromlist, level)
ImportError: No module named fiona

Versione Python:
2.7.10 (default, Aug 22 2015, 20:33:39)
[GCC 4.2.1 Compatible Apple LLVM 7.0.0 (clang-700.0.59.1)]

Versione di QGIS:
2.10.1-Pisa Pisa,

Percorso Python: ['/Applications/QGIS.app/Contents/MacOS/../Resources/python/plugins/processing', '/Applications/QGIS.app/Contents/MacOS/../Resources/python', u'/Users/simona/.qgis2/python', u'/Users/simona/.qgis2/python/plugins', '/Applications/QGIS.app/Contents/MacOS/../Resources/python/plugins', '/Library/Frameworks/SQLite3.framework/Versions/C/Python/2.7', '/Library/Frameworks/GEOS.framework/Versions/3/Python/2.7/site-packages', '/Library/Python/2.7/site-packages/numpy-override', '/Library/Python/2.7/site-packages/matplotlib-override', '/Library/Frameworks/GDAL.framework/Versions/1.11/Python/2.7/site-packages', '/Library/Python/2.7/site-packages/pip-1.5.4-py2.7.egg', '/Applications/QGIS.app/Contents/MacOS/grass/etc/python', '/', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python27.zip', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-old', '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-dynload', '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC', '/Library/Python/2.7/site-packages', u'/Users/simona/.qgis2//python', '/Applications/QGIS.app/Contents/Resources/python/plugins/fTools/tools']