Telebot update: fix error #2006, MySQL server has gone away

from django.conf import settings as main_settings

from django.utils.html import strip_tags

from django.db.models import Q

from django.db import transaction, connection, connections

from django.urls import reverse

from opds_catalog.models import Book, Author

        self.logger.info("Start talking with user: %s"%update.message.from_user)

    def BookFilter(self, query):

        if connection.connection and not connection.is_usable():

            del(connections._connections.default)

        q_objects = Q()

        q_objects.add(Q(search_title__contains=query.upper()), Q.OR)

        q_objects.add( Q(authors__search_full_name__contains=query.upper()), Q.OR)