Error in Java path specification

Hi,

I just got a Windows computer (Win10) and just installed Matlab 2019b. When I launch Matlab, I keep having this error message:

Warning: Unrecognized token "$null " in Java path specification.
Warning: Unrecognized token "$null " in Java path specification.
Warning: Unrecognized token "$null " in Java path specification.
Warning: Unrecognized token "$null " in Java path specification.
Warning: Unrecognized token "$null " in Java path specification.
Warning: Unrecognized token "$null " in Java path specification.
Warning: Unrecognized token "$null " in Java path specification.
Warning: Unrecognized token "$null " in Java path specification.

When I check the Java class path, this is what I get:

>> javaclasspath('-static')

		STATIC JAVA PATH

	C:\Program Files\MATLAB\R2019b\java\...
     

(I croppped all the subfolders in the output tree here).

As for the dynamical pathway:

>> javaclasspath('-dynamic')

		DYNAMIC JAVA PATH

		<empty>
  

I have no idea what to do and cannot find anything on the web. If anyone has an idea, I would really appreciated it.

Thank you for your help!