CIBERSORTx error (error in rep(2, size * length(cells) -1)) : invalid 'times' argument

Question

[Amairani]

Hi, I am Amairani new to using CIBERSORTx for cell type deconvolution. I am trying to create a signature matrix from a single-cell reference matrix. However, I am getting this error:

Error in rep(2, size * (length(cells) - 1)) : invalid 'times' argument Calls: CIBERSORTxFractions -> makeRefandClassFiles Execution halted

I am grateful for any advice, this is an example of what my single cell matrix looks like: