need to reset customizer but can't get back in the customizer

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i made a Chang in the customizer and now i get an error that a varible is undefined. i what to reset the cusomizer so that it will work agen but can get in to it. Is there a file that i can mainly delete to reset it?

 
Steevb replied on at Permalink Reply
Steevb
Which variable is undefined?

Which theme are you using?
shortwod replied on at Permalink Reply
i'm working on making my owen them and the variable is set in the defaults.less. what i did what hit the x on the back ground color for this this variable and now i need to rest customizer manly for i can not get back in it
Steevb replied on at Permalink Reply
Steevb
Please show code error?
shortwod replied on at Permalink Reply
variable @navbg-color is undefined
Steevb replied on at Permalink Reply
Steevb
Check and make sure reference to '@nav-bg-color' is right. It's in 'defaults.less', but where else is it written?
shortwod replied on at Permalink Reply
Thank you for the help. That was an old var that i had and i forgot that i was using it in a lighten stament. thank u for your help