I have updated through the Play Store to version 19, i had the error: "Software caused connection aborted", you can fix this by:
Settings -> Services -> SMBclient -> Minimum = V1, Maximum = V3
Be aware that some of the already installed ad-don's can stop working because of the incompatibility with the new Python 3 version in Kodi 19
So if you have lots of add-ons installed you better wait with upgrading to version 19 until the addons are made compatible with Kodi 19 (Python 3)