armhf chromedriver version doesn't match browser

For diagnostic purposes please provide the output of the commands

uname -a
lsb_release -crid
dpkg -l | grep chromium
apt-cache policy chromium-browser chromium-chromedriver

Alright, here they are:
$ uname -a
Linux orangepizero 3.4.113-sun8i #4 SMP PREEMPT Wed Nov 22 13:45:28 CET 2017 armv7l armv7l armv7l GNU/Linux
$ lsb_release -crid
Distributor ID: Ubuntu
Description: Ubuntu 16.04.3 LTS
Release: 16.04
Codename: xenial
$ dpkg -l | grep chromium
ii chromium-browser 69.0.3497.81-0ubuntu0.16.04.1 armhf Chromium web browser, open-source version of Chrome
ii chromium-chromedriver 69.0.3497.81-0ubuntu0.16.04.1 armhf WebDriver driver for the Chromium Browser
ii chromium-codecs-ffmpeg-extra 69.0.3497.81-0ubuntu0.16.04.1 armhf Extra ffmpeg codecs for the Chromium Browser
$ apt-cache policy chromium-browser chromium-chromedriver
chromium-browser:
  Installed: 69.0.3497.81-0ubuntu0.16.04.1
  Candidate: 69.0.3497.81-0ubuntu0.16.04.1
  Version table:
 *** 69.0.3497.81-0ubuntu0.16.04.1 500
        500 http://ports.ubuntu.com xenial-security/universe armhf Packages
        500 http://ports.ubuntu.com xenial-updates/universe armhf Packages
        100 /var/lib/dpkg/status
     49.0.2623.108-0ubuntu1.1233 500
        500 http://ports.ubuntu.com xenial/universe armhf Packages
chromium-chromedriver:
  Installed: 69.0.3497.81-0ubuntu0.16.04.1
  Candidate: 69.0.3497.81-0ubuntu0.16.04.1
  Version table:
 *** 69.0.3497.81-0ubuntu0.16.04.1 500
        500 http://ports.ubuntu.com xenial-security/universe armhf Packages
        500 http://ports.ubuntu.com xenial-updates/universe armhf Packages
        100 /var/lib/dpkg/status
     49.0.2623.108-0ubuntu1.1233 500
        500 http://ports.ubuntu.com xenial/universe armhf Packages

As you can see in the details of the chromium-browser source package https://launchpad.net/ubuntu/+source/chromium-browser/ and https://launchpad.net/ubuntu/+archive/primary/+sourcepub/9424803/+listing-archive-extra the binaries that you have installed were compiled from the same source package.

I cannot believe that these two packages, compiled from the same source, would not fit together.
Do you have any additional confirmation that chromedriver version 69.0.3497.81 and chromium-browser version 69.0.3497.81 do not correctly cooperate?
Have you already encountered a problem when using them?

Yes I have, I tried initializing a selenium browser with chrome using python.
The code:

from selenium import webdriver
browser = webdriver.Chrome("/usr/lib/chromium-browser/chromedriver")

An error pops up shortly after, saying:
selenium.common.exceptions.WebDriverException: Message: unknown error: Chrome failed to start: exited abnormally
  (unknown error: DevToolsActivePort file doesn't exist)
  (The process started from chrome location /usr/lib/chromium-browser/chromium-browser is no longer running, so ChromeDriver is assuming that Chrome has crashed.)
  (Driver info: chromedriver=2.40,platform=Linux 3.4.113-sun8i armv7l)

Then I checked the version, like I mentioned in #0.
The driver version is 2.40 which would not work with chromium-browser binary version 69.
So I think the problem here is the driver version should be updated to a higher version.
Any version higher than 2.40 would do fine according to the following link.
https://sites.google.com/a/chromium.org/chromedriver/downloads

I suggest that you create a bug report.

I created a bug report, as you suggested and linked it to this question, Thanks!

Oops, did not mean to reopen this question, am closing this question for now.