Hi, after update odoo 9.0 the is the following error message. How to solve that?

Odoo Server Error

Traceback (most recent call last):

File "/odoo/odoo-server/openerp/http.py", line 643, in _handle_exception

return super(JsonRequest, self)._handle_exception(exception)

File "/odoo/odoo-server/openerp/http.py", line 680, in dispatch

result = self._call_function(**self.params)

File "/odoo/odoo-server/openerp/http.py", line 316, in _call_function

return checked_call(self.db, *args, **kwargs)

File "/odoo/odoo-server/openerp/service/model.py", line 118, in wrapper

return f(dbname, *args, **kwargs)

File "/odoo/odoo-server/openerp/http.py", line 309, in checked_call

result = self.endpoint(*a, **kw)

File "/odoo/odoo-server/openerp/http.py", line 959, in __call__

return self.method(*args, **kw)

File "/odoo/odoo-server/openerp/http.py", line 509, in response_wrap

response = f(*args, **kw)

File "/odoo/odoo-server/addons/web/controllers/main.py", line 892, in call_kw

return self._call_kw(model, method, args, kwargs)

File "/odoo/odoo-server/addons/web/controllers/main.py", line 884, in _call_kw

return getattr(request.registry.get(model), method)(request.cr, request.uid, *args, **kwargs)

File "/odoo/odoo-server/openerp/api.py", line 238, in wrapper

return old_api(self, *args, **kwargs)

File "/odoo/odoo-server/openerp/api.py", line 342, in old_api

result = method(recs, *args, **kwargs)

File "/odoo/odoo-server/addons/web_planner/models/web_planner.py", line 45, in render

return self.env['ir.ui.view'].browse(template_id).render(values=values)

File "/odoo/odoo-server/openerp/api.py", line 236, in wrapper

return new_api(self, *args, **kwargs)

File "/odoo/odoo-server/openerp/api.py", line 562, in new_api

result = method(self._model, cr, uid, self.ids, *args, **old_kwargs)

File "/odoo/odoo-server/addons/website/models/ir_ui_view.py", line 141, in render

return super(view, self).render(cr, uid, id_or_xml_id, values=values, engine=engine, context=context)

File "/odoo/odoo-server/openerp/api.py", line 238, in wrapper

return old_api(self, *args, **kwargs)

File "/odoo/odoo-server/addons/web_editor/models/ir_ui_view.py", line 29, in render

return super(view, self).render(cr, uid, id_or_xml_id, values=values, engine=engine, context=context)

File "/odoo/odoo-server/openerp/api.py", line 238, in wrapper

return old_api(self, *args, **kwargs)

File "/odoo/odoo-server/openerp/addons/base/ir/ir_ui_view.py", line 1065, in render

return self.pool[engine].render(cr, uid, id_or_xml_id, qcontext, loader=loader, context=context)

File "/odoo/odoo-server/openerp/api.py", line 238, in wrapper

return old_api(self, *args, **kwargs)

File "/odoo/odoo-server/openerp/addons/base/ir/ir_qweb.py", line 252, in render

element = self.get_template(id_or_xml_id, qwebcontext)

File "/odoo/odoo-server/openerp/addons/base/ir/ir_qweb.py", line 172, in get_template

document = qwebcontext.loader(name)

File "/odoo/odoo-server/openerp/addons/base/ir/ir_ui_view.py", line 1063, in loader

return self.read_template(cr, uid, name, context=context)

File "/odoo/odoo-server/openerp/api.py", line 238, in wrapper

return old_api(self, *args, **kwargs)

File "/odoo/odoo-server/openerp/addons/base/ir/ir_ui_view.py", line 938, in read_template

return self._read_template(cr, uid, view_id, context=context)

File "/odoo/odoo-server/openerp/api.py", line 238, in wrapper

return old_api(self, *args, **kwargs)

File "<string>", line 2, in _read_template

File "/odoo/odoo-server/openerp/tools/cache.py", line 85, in lookup

value = d[key] = self.method(*args, **kwargs)

File "/odoo/odoo-server/openerp/addons/base/ir/ir_ui_view.py", line 923, in _read_template

arch = self.read_combined(cr, uid, view_id, fields=['arch'], context=context)['arch']

File "/odoo/odoo-server/openerp/api.py", line 238, in wrapper

return old_api(self, *args, **kwargs)

File "/odoo/odoo-server/openerp/addons/base/ir/ir_ui_view.py", line 635, in read_combined

view_arch = etree.fromstring(view['arch'].encode('utf-8'))

File "lxml.etree.pyx", line 3032, in lxml.etree.fromstring (src/lxml/lxml.etree.c:68106)

File "parser.pxi", line 1785, in lxml.etree._parseMemoryDocument (src/lxml/lxml.etree.c:102455)

File "parser.pxi", line 1673, in lxml.etree._parseDoc (src/lxml/lxml.etree.c:101284)

File "parser.pxi", line 1074, in lxml.etree._BaseParser._parseDoc (src/lxml/lxml.etree.c:96466)

File "parser.pxi", line 582, in lxml.etree._ParserContext._handleParseResultDoc (src/lxml/lxml.etree.c:91275)

File "parser.pxi", line 683, in lxml.etree._handleParseResult (src/lxml/lxml.etree.c:92461)

File "parser.pxi", line 622, in lxml.etree._raiseParseError (src/lxml/lxml.etree.c:91757)

XMLSyntaxError: expected '>', line 16, column 58

Thanks in advance