For what reasons could this error appear?

Hi, yesterday I was working on my project and everything was working fine. Today when I wanted to connect to Companion this error appears (without having modified anything):

Error from Companion: Attempt to invoke virtual method ‘java.lang.String java.lang.Throwable.toString()’ on a null object reference

What does that error mean? For what reasons could this error appear? I searched several posts and I can’t find the solution. Does it have something to do with the new update?

Are you using the beta or the main builder and did you update the companion.

I’m using beta builder and I reinstalled the companion (version 3.1) and the problem persists.

I guess a new bug in the latest update, Can you post a list of components you use and your blocks or just your aia would be fine as well.

Sorry, I can’t send the aia file. Instead I was doing a lot of testing since yesterday until I finally found something. I noticed that the error appears on labels where Font Typeface was set to Material Icons. Now it appears different…

Instead of “Material Icons” there is “4…”
image

If I click it appears like this:
image

Material Icons option has disappeared?

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