Due to this error: wtforms/wtforms-sqlalchemy#9 , replaced wtforms_sq…

…lalchemy by wtforms_alchemy

app/users/forms.py

@@ -1,7 +1,7 @@
 from flask_wtf import FlaskForm
 from flask_sqlalchemy import SQLAlchemy
 from wtforms import StringField, PasswordField, BooleanField, SubmitField, HiddenField
-from wtforms_sqlalchemy.fields import QuerySelectField
+from wtforms_alchemy.fields import QuerySelectField
 from wtforms.validators import ValidationError, DataRequired, Email, EqualTo
 from flask_babel import _, lazy_gettext as _l
 from app.models import User, Profile
@@ -73,4 +73,4 @@ def validate_email(self, email):
         if email.data != self.original_email:
             user = User.query.filter_by(email=email.data).first()
             if user is not None:
-                raise ValidationError(_('E-mail ya registrado, por favor, use un e-mail diferente.'))
+                raise ValidationError(_('E-mail ya registrado, por favor, use un e-mail diferente.'))

requirements.txt

@@ -40,13 +40,13 @@ python-dotenv==0.10.3
 python-editor==1.0.4
 pytz==2019.2
 six==1.12.0
-SQLAlchemy==1.3.8
+SQLAlchemy==1.2.6
 SQLAlchemy-Utils==0.34.2
 traitlets==4.3.2
 validators==0.14.0
 visitor==0.1.3
 wcwidth==0.1.7
 Werkzeug==0.15.5
 WTForms==2.2.1
+WTForms-Alchemy==0.16.9
 WTForms-Components==0.10.4
-WTForms-SQLAlchemy==0.1