Manager assets not showing after Upgrade to MODX3

[vibedesign]

I am finally updating older client sites to MODX 3. I’m using UpgradeMODX but I keep running into an issue:

After upgrading (from 2.8.3 to 3.0) the MODX Logo in the manager is no longer showing.

I noticed in the server error log there is a double // in the path:
404 GET /manager/templates//images/modx-icon-color.svg HTTP/1.0

Is there a path setting that needs changing?

If I try to further upgrade to 3.1 I also get this error:

Error requesting page /assets/components/upgrademodx/connector.php?action=cleanup&props%5Bugm_setup_url%5D=https%3A%2F%2Fdomain.tld%2Fsetup%2Findex.php&version=modx-3.1.0-pl.zip

Thanks for any help!

[halftrainedharry]

@vibedesign

there is a double // in the path:

What is the value of the system setting manager_theme?
(It should be default by default.)

[vibedesign]

There was no value in there, now set back to default it’s working again, thanks!