Heatmap image is not visible and the file is not downloaded

Hello. In Statistical analysis [on factor], we tried to heat map the correlation between concentration and sample as a result of MS analysis. The data type was checked as concentrations, and the data file was submitted as a csv file. As a result, data processing information like the picture below was obtained and proceeded.

And in the normalization overview, after proceeding by selecting normalize, I tried to see the result by selecting heatmaps, but the heatmap image is not visible.

I tried to download it as an image file, but this also fails to download due to an error.

How can I solve this problem?

Thanks in advance.