"The current theme cannot be loaded due to the errors below"

[soundofthunder]

Let’s try to address what you have done so far:

@happy_m

… i tried to do a full update of my system…
Updating did not complete successfully due to some problematic dependencies.

Here, you should have taken care of the problematic dependencies, and asked for help if needed while giving the exact command you entered and the output resulting from that command. Good so far?

@happy_m

Then i rebooted the system, and received an error screen with the text from the topic title and the inability to log into my system.

The error screen as you call it said “The current theme cannot be loaded due to the errors below” - that told us nothing - What errors were they?

@happy_m

I realized that the problem was in the updating KDE shell. And i tried to solve the problem from other similar forum topics, from where used the commands that I quoted in my first message.

Throwing commands randomly found in forum threads, when you don’t really know what they do, is a recipe for disaster.

I’m guessing that you somehow managed to leave yourself in a partial update state. There are many similar threads on that topic, and all of them different, with varying solutions. It might even be easier to install Manjaro from scratch; but that’s up to you to decide.

@happy_m

For now, I’m trying to figure it out and do what you kindly shared here, despite my mistakes in post.

You do not appear to have read any of the links previously posted for you. I suggest you do that before going much further (a does not show that you actually read anything). Here are some more:

• System Maintenance
• Swap
• UEFI Install Guide
• Manjaro Kernels
• Pacman Troubleshooting
• Pamac

If these guides and tutorials are too much, you might also consider:

• [Consideration] Is Manjaro the right distribution for you?

I hope this helps. Cheers.