Problem with No trunks in FOP

$ nano /var/www/html/panel/op_buttons_custom.cfg

add the lines below, where ZAP is the technology, and 1 is the name of the trunk.
[zap/1]
Position=54
Label=”Line 1?
Extension=-1
Icon=3
Panel_Context=default

[zap/2]
Position=55
Label=”Line 2?
Extension=-1
Icon=3
Panel_Context=default

And so on.

Save the file. (ctrl x y)

Give it asterisk ownership

$ chown asterisk:asterisk /var/www/html/panel/op_buttons_custom.cfg

And you should be good to go.