Prompt the following error, how to solve, thank you!

[jinzaizhichi]

packer.nvim: Error running config for bufferline.nvim: /home/jinzaizhichi/.config/nvim/lua/layers/ui/colors.lua:31: attempt to concatenate local 'theme' (a nil value)

[yetone]

Thanks for your report! I fixed it now: 380427b