Error message

We cannot help you. You claim to have set the working directory but cannot find the file you expect to be there. Either you have failed to set the directory correctly, or the file is not where you think it is... and since we do not have access to your computer we have no way to tell you which case is true.

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Hello
When i run this command i get the error as shown below.I also changed
my
working directory and set it where ever i want but still its
hopeless.please help me

counts <- read.table("NewBrain.tab", header=TRUE, row.names=1)

Error in file(file, "rt") : cannot open the connection
In addition: Warning message:
In file(file, "rt") :
 cannot open file 'NewBrain.tab': No such file or directory

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