I am upgrading my Django app to from 1.3 to 1.6 and getting following error.
TemplateSyntaxError at / 'firstof' is not a valid tag or filter in tag
library 'future'
Error during template rendering In template
/opt/python2.7/lib/python2.7/site-packages/django/contrib/admin/templates/admin/base.html,
error at line 1
'firstof' is not a valid tag or filter in tag library 'future'
{% load admin_static %}{% load firstof from future %}<!DOCTYPE html>
Here is the trace back
Traceback:
File "/opt/python2.7/lib/python2.7/site-packages/django/core/handlers/base.py" in get_response
139. response = response.render()
File "/opt/python2.7/lib/python2.7/site-packages/django/template/response.py" in render
105. self.content = self.rendered_content
File "/opt/python2.7/lib/python2.7/site-packages/django/template/response.py" in rendered_content
82. content = template.render(context)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/base.py" in render
140. return self._render(context)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/base.py" in _render
134. return self.nodelist.render(context)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/base.py" in render
840. bit = self.render_node(node, context)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/debug.py" in render_node
78. return node.render(context)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/loader_tags.py" in render
123. return compiled_parent._render(context)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/base.py" in _render
134. return self.nodelist.render(context)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/base.py" in render
840. bit = self.render_node(node, context)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/debug.py" in render_node
78. return node.render(context)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/loader_tags.py" in render
101. compiled_parent = self.get_parent(context)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/loader_tags.py" in get_parent
98. return get_template(parent)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/loader.py" in get_template
138. template, origin = find_template(template_name)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/loader.py" in find_template
127. source, display_name = loader(name, dirs)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/loader.py" in __call__
43. return self.load_template(template_name, template_dirs)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/loader.py" in load_template
49. template = get_template_from_string(source, origin, template_name)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/loader.py" in get_template_from_string
149. return Template(source, origin, name)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/base.py" in __init__
125. self.nodelist = compile_string(template_string, origin)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/base.py" in compile_string
153. return parser.parse()
File "/opt/python2.7/lib/python2.7/site-packages/django/template/base.py" in parse
278. compiled_result = compile_func(self, token)
File "/opt/python2.7/lib/python2.7/site-packages/django/template/defaulttags.py" in load
1074. (name, taglib))
Exception Type: TemplateSyntaxError at /
Exception Value: 'firstof' is not a valid tag or filter in tag library 'future'
