Unable to resolve this « 500 internal server error ».

I have got this error log.

So I have deleted the line in ir_rule containing «issue_user_rule».

But the same error appear even if this line is deleted in ir_rule.

I have restarted the server.

An idea?

2014-11-03 18:11:22,049 2686 INFO ? openerp: OpenERP version 8.0-8a9027e
2014-11-03 18:11:22,049 2686 INFO ? openerp: addons paths: ['/var/lib/odoo/addons/8.0', u'/usr/lib/python2.7/dist-packages/openerp/addons']
2014-11-03 18:11:22,049 2686 INFO ? openerp: database hostname: localhost
2014-11-03 18:11:22,049 2686 INFO ? openerp: database port: 5432
2014-11-03 18:11:22,049 2686 INFO ? openerp: database user: odoo
2014-11-03 18:11:22,219 2686 INFO ? openerp.service.server: HTTP service (werkzeug) running on 0.0.0.0:8069
2014-11-03 18:11:22,224 2686 INFO la_page_pt openerp.modules.loading: loading 1 modules...
2014-11-03 18:11:22,353 2686 INFO la_page_pt openerp.modules.loading: 1 modules loaded in 0.13s, 0 queries
2014-11-03 18:11:22,386 2686 INFO la_page_pt openerp.modules.loading: loading 82 modules...
2014-11-03 18:11:22,390 2686 INFO la_page_pt passlib.registry: registered crypt handler 'pbkdf2_sha512': <class 'passlib.handlers.pbkdf2.pbkdf2_sha512'>
2014-11-03 18:11:22,390 2686 INFO la_page_pt passlib.registry: registered crypt handler 'md5_crypt': <class 'passlib.handlers.md5_crypt.md5_crypt'>
2014-11-03 18:11:22,454 2686 INFO ? openerp.addons.bus.bus: Bus.loop listen imbus on db postgres
2014-11-03 18:11:22,465 2686 INFO la_page_pt openerp.addons.report.models.report: Will use the Wkhtmltopdf binary at /usr/local/bin/wkhtmltopdf
2014-11-03 18:11:23,956 2686 INFO la_page_pt openerp.modules.module: module portal_project_issue: creating or updating database tables
2014-11-03 18:11:23,963 2686 INFO la_page_pt openerp.modules.loading: loading portal_project_issue/security/portal_security.xml
2014-11-03 18:11:24,071 2686 CRITICAL la_page_pt openerp.service.server: Failed to initialize database `la_page_pt`.
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/openerp/service/server.py", line 901, in preload_registries
    registry = RegistryManager.new(dbname, update_module=update_module)
  File "/usr/lib/python2.7/dist-packages/openerp/modules/registry.py", line 324, in new
    openerp.modules.load_modules(registry._db, force_demo, status, update_module)
  File "/usr/lib/python2.7/dist-packages/openerp/modules/loading.py", line 354, in load_modules
    force, status, report, loaded_modules, update_module)
  File "/usr/lib/python2.7/dist-packages/openerp/modules/loading.py", line 263, in load_marked_modules
    loaded, processed = load_module_graph(cr, graph, progressdict, report=report, skip_modules=loaded_modules, perform_checks=perform_checks)
  File "/usr/lib/python2.7/dist-packages/openerp/modules/loading.py", line 182, in load_module_graph
    _load_data(cr, module_name, idref, mode, kind='data')
  File "/usr/lib/python2.7/dist-packages/openerp/modules/loading.py", line 118, in _load_data
    tools.convert_file(cr, module_name, filename, idref, mode, noupdate, kind, report)
  File "/usr/lib/python2.7/dist-packages/openerp/tools/convert.py", line 899, in convert_file
    convert_xml_import(cr, module, fp, idref, mode, noupdate, report)
  File "/usr/lib/python2.7/dist-packages/openerp/tools/convert.py", line 985, in convert_xml_import
    obj.parse(doc.getroot(), mode=mode)
  File "/usr/lib/python2.7/dist-packages/openerp/tools/convert.py", line 851, in parse
    self._tags[rec.tag](self.cr, rec, n, mode=mode)
  File "/usr/lib/python2.7/dist-packages/openerp/tools/convert.py", line 698, in _tag_record
    self._test_xml_id(rec_id)
  File "/usr/lib/python2.7/dist-packages/openerp/tools/convert.py", line 289, in _test_xml_id
    assert modcnt == 1, """The ID "%s" refers to an uninstalled module""" % (xml_id,)
ParseError: "The ID "project_issue.issue_user_rule" refers to an uninstalled module" while parsing /usr/lib/python2.7/dist-packages/openerp/addons/portal_project_issue/security/portal_security.xml:20, near
<record model="ir.rule" id="project_issue.issue_user_rule">
            <field name="name">Project/Issue: employees: public, portal, employee or (followers and following)</field>
            <field name="domain_force">['|',
                                            ('project_id.privacy_visibility', 'in', ['public', 'portal', 'employees']),
                                            '&amp;',
                                                ('project_id.privacy_visibility', '=', 'followers'),
                                                ('message_follower_ids', 'in', [user.partner_id.id]),
                                        ]</field>
        </record>

I also tried this : « openerp-server -c /etc/odoo/openerp-server.conf -i portal -i portal_project_issue --stop-after-init -i portal_anonymous » still the same error.

Thanks!