in python project using pycharm, im getting error, any help

[Amr Hamed]

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in python project using pycharm, im getting error, any help:

models.py

from django.contrib.gis.db import models
from django.contrib.gis.db.models import PointField
from phone_field import PhoneField
 # Create your models here.
class Clinic1(models.Model):

    name = models.CharField(max_length=100)
    location = models.PointField()
    address = models.CharField(max_length=100)
    city = models.CharField(max_length=50)
    date = models.DateTimeField(auto_now_add=True)


    Establishment = models.CharField(max_length=100, default='SOME STRING' )
    StreetNumber = models.CharField(max_length=100, default='SOME STRING' )
    StreetName = models.CharField(max_length=100, default='SOME STRING')
    suite = models.CharField(max_length=100, default='SOME STRING')
    city = models.CharField("City", max_length=1024, default='SOME STRING')
    state = models.CharField("State", max_length=100, default='SOME STRING')
    zip_code = models.CharField("ZIP / Postal code", max_length=12, default='SOME STRING')
    latitude = models.PointField(max_length=100, blank=True, null=True )
    longitude = models.PointField(max_length=100, blank=True, null=True )
    PhoneNumber = PhoneField(blank=True, help_text='Contact phone number')
    licensenumber = models.CharField(max_length=100, default='SOME STRING')
    district = models.CharField(max_length=100, default='SOME STRING')
    Sector = models.CharField(max_length=100, default='SOME STRING')
    CouncilDistrict = models.CharField(max_length=100, default='SOME STRING')
    workzone = models.CharField(max_length=100, default='SOME STRING')
    county = models.CharField(max_length=100, default='SOME STRING')
    ApprovedDate = models.DateTimeField(auto_now_add=True, blank=True, null=True)
    LicenseFeeSchedule = models.CharField(max_length=100, default='SOME STRING')



i get this error when i run>> python manage.py migrate


  raise ValueError('String input unrecognized as WKT EWKT, and HEXEWKB.')
ValueError: String input unrecognized as WKT EWKT, and HEXEWKB.