Problem when building & serve locally

[lbiru]

I got the following messages when building the documentation.
I run it on ubuntu on windows 10 (WSL).
How to resolve this?

Live reload server started on port: 35729                                                                
Press CTRL+C to quit ...                                                                                 
                                                                                                         
info: 10 plugins are installed                                                                           
info: loading plugin "ga"... OK                                                                          
info: loading plugin "edit-link"... OK                                                                   
info: loading plugin "offline"... OK                                                                     
info: loading plugin "livereload"... OK                                                                  
info: loading plugin "highlight"... OK                                                                   
info: loading plugin "search"... OK                                                                      
info: loading plugin "lunr"... OK                                                                        
info: loading plugin "sharing"... OK                                                                     
info: loading plugin "fontsettings"... OK                                                                
info: loading plugin "theme-default"... OK                                                               
info: found 132 pages                                                                                    
info: found 5 asset files                                                                                
error: error while generating page "syntax_and_semantics/macros.md":                                     
                                                                                                         
Template render error: (/mnt/c/p/crystal-book/syntax_and_semantics/macros.md) [Line 243, Column 9]       
  unknown block tag: end                                                                               

[straight-shoota]

I've encountered this issue as well. Seems to be happen only on WSL. I don't think there is anything we can do about it (except #261).