Differential analysis error

[LoeliaBabin]

Hello,
I encounter a new problem when performing differential analysis. It works well for all samples individually, but when I put them together for differential analysis I'm disconnected from the server.

Here is the result of the log file :

Listening on http://127.0.0.1:36905
Warning in cbind(data_a_nor1$mLymphAve, data_a_nor2$mLymphAve) :
number of rows of result is not a multiple of vector length (arg 2)
Warning: Error in $<-.data.frame: replacement has 233803 rows, data has 233788
Stack trace (innermost first):
67: $<-.data.frame
66: $<- [/srv/shiny-server/app.R#2132]
65: observeEventHandler [/srv/shiny-server/app.R#2132]
1: runApp

Do you know how to fix it ?
Thank you in advance