# [Tex/LaTex] what does this error message suggest?

errorsknitr

An error just prompted up when I process an .Rnw file using RSudio:

Loading required package: knitr
Warning message:
package ‘knitr’ was built under R version 3.1.2

processing file: PROVIDE_definition_f9pr1.Rnw
Error in parse_block(g[-1], g[1], params.src) : duplicate label 'match'
Calls: knit ... process_file -> split_file -> lapply -> FUN -> parse_block
Execution halted


I think it is related to package knitr, but I have no idea where the error come from. Does anybody know what happened?

It suggests that you have at least two code chunks with the same label match, like this
<<match>>=