plotting 2d graphs with decimals

I want to plot graph but gives me this error. this is the code i used

time_X_core224_6= readmatrix("Лист Microsoft Excel.xlsx","Sheet","Лист1","Range","A3:A4401")

time_X_core224_7= readtable("Лист Microsoft Excel.xlsx","Sheet","Лист1","Range","G3:G4401")

time_X_core224_9= readtable("Лист Microsoft Excel.xlsx","Sheet","Лист1","Range","M3:M4401")

time_X_core224_28= readtable("Лист Microsoft Excel.xlsx","Sheet","Лист1","Range","S3:S4401")

time_X_core224_38= readtable("Лист Microsoft Excel.xlsx","Sheet","Лист1","Range","Y3:Y4401")

time_X_core156421= readtable("Лист Microsoft Excel.xlsx","Sheet","Лист1","Range","AE3:AE4401")

Core224_6_KY = readmatrix("Лист Microsoft Excel.xlsx","Sheet","Лист1","Range","AZ4:BE4")

Core224_7_KY = readtable("Лист Microsoft Excel.xlsx","Sheet","Лист1","Range","AZ9:BE9")

Core224_9_KY = readtable("Лист Microsoft Excel.xlsx","Sheet","Лист1","Range","AZ14:BE14")

Core224_28_KY = readtable("Лист Microsoft Excel.xlsx","Sheet","Лист1","Range","AZ19:BE19")

Core224_38_KY = readtable("Лист Microsoft Excel.xlsx","Sheet","Лист1","Range","AZ24:BE24")

Core224_156421_KY = readtable("Лист Microsoft Excel.xlsx","Sheet","Лист1","Range","AZ29:BE29")

KY_Fig = plot(time_X_core224_6,Core224_6_KY)

Any solutions?