Hai mr. Anton...
GOD bless you...
On my modern traccar my location button not active
How any trouble on my Ubuntu 18...?
Or any port must open on my location button to active this button

Thanks before...

You have to assign the button to:

Edit, extras and category

Inside it assigns its category.

not category device....
my location button is under the option layer buton
this is in my modern traccar only

in my windows at home my location button is normal and worked....
but in my vps ubuntu my location button non active

this is not tracking target gps...

how to upload image screenshoot in here....
sory...
im newbie...

Use this website to upload your image.

https://transfer.sh/

LlaterDo the following and load

Upload from web

Drag your files here, or click to browse.

Copy and paste the generated link. Which contains your image.

Thaks brother Castillo....

https://transfer.sh/15DHRi1/IMG_20210707_144500.png

That button not active in my vps Ubuntu...
But in my PC with windows7 the button worked normal function

The button depends on your browser, not on the server. If it's not active, it probably means that your browser doesn't support it or location is blocked.

Thanks Mr. Anton...
Please look my COMPUTER if my Google chrome open my traccar from computer and open my traccar from vps...

https://transfer.sh/1Lotdmf/IMG_20210708_040613.jpg

Look button and link browser in my red line
Thanks....

Do you have HTTPS enabled? If not, that would be one of the reasons. Location is only allowed over secure connection.

does it need permission to enable location on my vps ubuntu?
or open a port maybe ?

You have to set up secure connection. Relevant documentation:

https://www.traccar.org/secure-connection/

I Will try to check https....
And enable it...

still not active in my ubuntu...

Please provide URL and login.