When troubleshooting issues on a Raspberry Pi sometimes it is helpful to go back and look at the boot log, especially if you are running a headless (no monitor) Raspberry Pi.
You will be asked to restart services, select ‘Yes’. And then reboot your Raspberry Pi
View Boot Log
From now on, if you wish to view the bootlog, you can use the command below to format it correctly;
sed 's/\^\[/\o33/g;s/\[1G\[/\[27G\[/' /var/log/boot
You will get the output as shown in the image at the top of this post.