RelatedObjectDoesNotExist at /updateprofile User has no profile - django

Question

i have one model userprofile which is connected to User by onetoone relationship. i am trying to create combined form for both user and userprofile form but it is showing onetoonedescripter has no attribute _meta.
views.py
'''
def UpdateProfile(request):
if request.method =='POST':
EUF_form = EditUserForm(request.POST, instance=request.user )
EPF_form = EditProfileForm(request.POST, instance=request.user.Profile )
if EUF_form.is_valid() and EPF_form.i_valid():
EUF_form.save()
EPF_form.save()
return HttpResponse("Profile updated succesfully.")
return render(request, 'profile_page.html')
else:
EUF_form = EditUserForm(instance=request.user)
EPF_form = EditProfileForm(instance=request.user.profile)
return render(request, 'edit_profile.html', {'EUF_form':EUF_form, 'EPF_form':EPF_form})
'''
models.py
'''
class Profile(models.Model):
user = models.OneToOneField(User, on_delete= models.CASCADE)
mobile = models.CharField(max_length=20, blank=True)
bio = models.CharField(max_length=300, default='')
avatar = models.ImageField(upload_to='avatars', blank=True)
birthday = models.DateField(blank=True, default='1990-12-01')
website = models.CharField(blank=True, max_length=256)
gender = models.CharField(blank=True, max_length=20, choices=[('M','Male'), ('F','Female'),('O','Other')])
def __str__(self):
return self.user.username
'''
forms.py
'''
class EditUserForm(ModelForm):
first_name = forms.CharField(widget=forms.TextInput(
attrs={'class': 'form-control','type':'text','name': 'first_name'}),
label="First Name")
last_name = forms.CharField(widget=forms.TextInput(
attrs={'class': 'form-control','type':'text','name': 'last_name'}),
label="Last Name")
username = forms.CharField(widget=forms.TextInput(
attrs={'class': 'form-control','type':'text','name': 'username'}),
label="Username")
email = forms.EmailField(widget=forms.TextInput(
attrs={'class': 'form-control','type':'text','name': 'email'}),
label="Email")
class Meta:
model = User
fields = ['first_name','last_name','username','email']
class EditProfileForm(ModelForm):
mobile = forms.CharField(widget=forms.TextInput(
attrs={'class': 'form-control','type':'tel','name': 'mobile'}),
label="Phone number")
bio = forms.CharField(widget=forms.Textarea,
label="Bio")
birthday = forms.DateField(widget=forms.DateInput(
attrs={'class': 'form-control','type':'date','name': 'birthday'}),
label="Username")
website = forms.URLField(widget=forms.URLInput(
attrs={'class': 'form-control','type':'url','name': 'website'}),
label="website")
gender = forms.ChoiceField(choices=[('M','Male'), ('F','Female'),('O','Other')],
widget=forms.Select ,
label="gender")
class Meta:
model = Profile
fields = ['mobile','bio','birthday','website','gender']
'''