IOError: encoder zip not available

[Maryia_Lepeshko@…]

How to Reproduce

While doing a GET operation on /agilo-charts, Trac issued an internal error.

(please provide additional details here)

Request parameters:

{'height': u'350', 'sprint': u'November', 'type': u'burndown', 'width': u'750'}

User Agent was: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.0.4) Gecko/2008102920 Firefox/3.0.4

System Information

Trac	0.11.1
Python	2.5.2 (r252:60911, Nov 12 2008, 18:40:01) [GCC 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)]
setuptools	0.6c9
SQLite	3.3.8
pysqlite	2.5.0
Genshi	0.5.1
jQuery:	1.2.6

Python Traceback

Traceback (most recent call last):
  File "/home/agile42/tree/lib/python/Trac-0.11.1-py2.5.egg/trac/web/main.py", line 423, in _dispatch_request
    dispatcher.dispatch(req)
  File "/home/agile42/tree/lib/python/Trac-0.11.1-py2.5.egg/trac/web/main.py", line 197, in dispatch
    resp = chosen_handler.process_request(req)
  File "/home/agile42/tree/lib/python/agilo-0.7.1_r995_20081123-py2.5.egg/agilo/charts/web_ui.py", line 160, in process_request
    png_data = self.chart_classes[chart](self.env, args=req.args, logger=self.log).generate()
  File "/home/agile42/tree/lib/python/agilo-0.7.1_r995_20081123-py2.5.egg/agilo/charts/web_ui.py", line 431, in generate
    return self.get_image()
  File "/home/agile42/tree/lib/python/agilo-0.7.1_r995_20081123-py2.5.egg/agilo/charts/web_ui.py", line 251, in get_image
    im.save(self.imageFile, 'PNG')
  File "/home/agile42/tree/lib/python/PIL/Image.py", line 1405, in save
    save_handler(self, fp, filename)
  File "/home/agile42/tree/lib/python/PIL/PngImagePlugin.py", line 510, in _save
    ImageFile._save(im, _idat(fp, chunk), [("zip", (0,0)+im.size, 0, rawmode)])
  File "/home/agile42/tree/lib/python/PIL/ImageFile.py", line 473, in _save
    e = Image._getencoder(im.mode, e, a, im.encoderconfig)
  File "/home/agile42/tree/lib/python/PIL/Image.py", line 391, in _getencoder
    raise IOError("encoder %s not available" % encoder_name)
IOError: encoder zip not available

[Emmanuel Blot]

Not a Trac issue, but a plugin issue. Please report the error to the plugin maintainer.

[Emmanuel Blot]

Looks like an installation issue though, maybe a missing Python component required by the plugin through the PIL library.

[anonymous]

​http://mail.python.org/pipermail/tutor/2007-March/053053.html

Problem finally solved : had to reinstall and rebuild PIL (from tar) - this time pointing the setup.py to the right location of jpeg-6b library, and ONLY THEN running setup.py build_ext -i of Imaging1.1.6

hope someone can make use of this, Tsila