Fix errorhandler bug

src/app/models/project.py

@@ -1,4 +1,5 @@
 from models.database import db
+import mysql.connector
 
 def get_categories():
     """

src/app/models/register.py

@@ -1,4 +1,5 @@
 from models.database import db
+import mysql.connector
 
 def set_user(username, password, full_name, company, email, 
         street_address, city, state, postal_code, country):

src/app/models/user.py

@@ -1,4 +1,5 @@
 from models.database import db
+import mysql.connector
 
 def get_users():
     """