# Invalid AST kak-lsp

**URL:** <https://discuss.kakoune.com/t/invalid-ast-kak-lsp/845>\
**Category:** Help\
**Tags:** lsp\
**Created:** [January 11, 2020, 10:48pm UTC](https://discuss.kakoune.com/t/invalid-ast-kak-lsp/845 "2020-01-11T22:48:57Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![shrit](https://discuss.kakoune.com/user_avatar/discuss.kakoune.com/shrit/32/394_2.png) [@shrit](https://discuss.kakoune.com/u/shrit)\
**Post date:** [January 11, 2020, 10:48pm UTC](https://discuss.kakoune.com/t/invalid-ast-kak-lsp/845/1 "2020-01-11T22:48:57Z")

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Hello,

I have started using kak-lsp recently, I am getting` c_cpp language server error invalide-AST` error when I am in normal mode, otherwise, it is working perfectly when I am in insert mode.  
Any thoughts??  
Best regards,