Error running python migrate

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This question is a follow-up to this tutorial:

When I try step 4, I try to launch: python migrate. I’m getting this error and I don’t know how to fix it. In my PC everything works correctly.

Request Method:	GET
Request URL:
Django Version:	3.1.4
Exception Type:	ProgrammingError
Exception Value:	
relation "weatherapi_weatherstation" does not exist
LINE 1: ...gitude", "weatherapi_weatherstation"."token" FROM "weatherap...
Exception Location:	/workspace/.heroku/python/lib/python3.8/site-packages/django/db/backends/, line 84, in _execute
Python Executable:	/app/.heroku/python/bin/python
Python Version:	3.8.9
Python Path:	
Server time:	Tue, 02 Nov 2021 12:52:05 +0000

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My Weatherapi

from uuid import uuid1
from django.db import models

def generate_uid():
    return uuid1().hex

# Create your models here.
class WeatherStation(models.Model):
    uid = models.CharField(max_length=32, db_index=True, unique=True, default=generate_uid)
    name = models.CharField(max_length=256, default="No name")
    created_at = models.DateTimeField(auto_now_add=True)
    latitude = models.FloatField()
    longitude = models.FloatField()
    token = models.CharField(max_length=40, unique=True,)

    def __str__(self):

class WeatherRecord(models.Model):
    created_at = models.DateTimeField(auto_now_add=True)
    temperature = models.DecimalField(default=None, max_digits=4, decimal_places=2)
    humidity = models.DecimalField(default=None, max_digits=4, decimal_places=2)
    pressure = models.DecimalField(default=None, max_digits=6, decimal_places=2)
    state = models.IntegerField(default=0)
    weather_station = models.ForeignKey(WeatherStation, on_delete=models.CASCADE, default=None)

    class Meta:
        ordering = ['-created_at']