Connection Problem between UGS and Arduino

Greetings,
I am currently trying to build a 3-Axis cnc machine.
The hardware (Arduino CNC Shield V3) is all setup and connected to the drivers and steppers but i cant get UGS to connect to the Arduino UNO.
I can upload the GRBL library to the Arduino UNO with no problems but whith UGS i cant even get a connection. I tried with a BAUD rate of 9600 and 115200. Here is the error code:

*** Connecting to jserialcomm://COM7:9600
Grbl 0.8c ['$' for help]
<Idle,MPos:0.000,0.000,0.000,WPos:0.000,0.000,0.000>
*** Fetching device status
>>> ?
<Idle,MPos:0.000,0.000,0.000,WPos:0.000,0.000,0.000>
>>> $I
ok
*** Could not detect the GRBL version
**** Connection closed ****
*** Connecting to jserialcomm://COM7:115200
ormat
*** Fetching device status
>>> ?
*** Fetching device status (2 of 10)...
>>> ?
*** Fetching device status (3 of 10)...
>>> ?
*** Fetching device status (4 of 10)...
>>> ?
*** Fetching device status (5 of 10)...
>>> ?
*** Fetching device status (6 of 10)...
>>> ?
*** Fetching device status (7 of 10)...
>>> ?
*** Fetching device status (8 of 10)...
>>> ?
*** Fetching device status (9 of 10)...
>>> ?
*** Fetching device status (10 of 10)...
>>> ?
**** Connection closed ****

With the BAUD rate at 9600 it says it cant detect the GRBL version but i reinstalled the library in every way that i can think of already and even got an older version of UGS and the Arduino IDE but that didnt help.

Does anyone know how i can resolve this ?

What code is there in the UNO? What is "GRBL library"?

I just solved it,
I downloaded the wrong library from Github.
I needed to install the "grbl1.1h" and not the "GRBL-Arduino-library-master" altough it said on github to use the latter.

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