I’ve had that error once or twice when using readcsv / readdlm on kaggle’s kernels platform, passing though an IOBuffer with default settings (readable=true / writeable = true / etc) seemed to help. /readonly? fix for readdlm
Reading a file probably shouldn’t need write access though.
-Added: had a little dig and there’s a fill(**readonly?** stringbuff, 1,0 ) hiding in DLMStore() -base/dataFmt.jl line 211 that might err if it passes a reference?