Please help me with the error When I am restarting my OpenERP server. It is giving me below mentioned error..

Internal Server Error (database) werkzeug: Error on request: 
Traceback (most recent call last): 
  File "/usr/local/lib/python2.7/dist-packages/werkzeug/serving.py", line 159, in run_wsgi 
    execute(app) 
  File "/usr/local/lib/python2.7/dist-packages/werkzeug/serving.py", line 146, in execute 
    application_fiter = app(environ, start_response) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/service/server.py", line 285, in app 
    return self.app(e, s) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/service/wsgi_server.py", line 216, in application 
    return application_unproxied(environ, start_response) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/service/wsgi_server.py", line 202, in application_unproxied 
    result = handler(environ, start_response) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/http.py", line 1280, in __call__ 
    return self.dispatch(environ, start_response) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/http.py", line 1254, in __call__ 
    return self.app(environ, start_wrapped) 
  File "/usr/local/lib/python2.7/dist-packages/werkzeug/wsgi.py", line 411, in __call__ 
    return self.app(environ, start_response) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/http.py", line 1412, in dispatch 
    ir_http = request.registry['ir.http'] 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/http.py", line 339, in registry 
    return openerp.modules.registry.RegistryManager.get(self.db) if self.db else None 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/modules/registry.py", line 337, in get 
    update_module) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/modules/registry.py", line 368, in new 
    openerp.modules.load_modules(registry._db, force demo, status, update module) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/modules/loading.py", line 297, in loadmodules 
    loaded modules, processed modules = load module  graph(cr, graph, status, perform checks=update  module, report=report) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/modules/loading.py", line 179, in load module graph 
    _load data(cr, module name, idref, mode, kind='demo') 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/modules/loading.py", line 118, in _load data 
    tools.convert file(cr, module name, filename, idref, mode, noupdate, kind, report) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/tools/convert.py", line 901, in convertfile 
    convert xml import(cr, module, fp, idref, mode, noupdate, report) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/tools/convert.py", line 987, in convert  xml import 
    obj.parse(doc.getroot(), mode=mode) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/tools/convert.py", line 853, in parse 
    self.tags[rec.tag](self.cr, rec, n, mode=mode) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/tools/convert.py", line 763, in _tagrecord 
    id = self.pool['ir.model.data'].update(cr, self.uid, rec model, self.module, res, rec id or False, not self.isnoupdate(data node), noupdate=self.isnoupdate(data node), mode=self.mode, context=reccontext ) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/api.py", line 241, in wrapper 
    return old api(self, *args, **kwargs) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/addons/base/ir/ir model.py", line 1077, in _update 
    res id = model obj.create(cr, uid, values, context=context) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/api.py", line 241, in wrapper 
    return old api(self, *args, **kwargs) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/api.py", line 336, in old api 
    result = method(recs, *args, **kwargs) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/addons/base/res/res partner.py", line 573, in create 
    partner = super(res partner, self).create(vals) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/api.py", line 239, in wrapper 
    return new api(self, *args, **kwargs) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/models.py", line 4059, in create 
    record = self.browse(self._create(old_vals)) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/api.py", line 239, in wrapper 
    return new_api(self, *args, **kwargs) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/api.py", line 462, in new_api 
    result = method(self._model, cr, uid, *args, **kwargs) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/models.py", line 4197, in _create 
    tuple([u[2] for u in updates if len(u) > 2]) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/sql_db.py", line 158, in wrapper 
    return f(self, *args, **kwargs) 
  File "/home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/sql_db.py", line 234, in execute 
    res = self._obj.execute(query, params) 
ParseError: "null value in column "name" violates not-null constraint 
" while parsing /home/shiva/workspace/openerp/odoo-8.0-Mary/openerp/addons/base/res/res_partner_image_demo.xml:13, near 
<record id="base.res_partner_address_4" model="res.partner"> 
            <field name="image" type="base64" file="base/static/img/res_partner_address_4-image.png"/> 
        </record>