Error loading image: Postscript delegate failed `[ghostscript library 9.25] -sstdout=%stderr -dQUIET -dSAFER -dBATCH -dNOPAUSE -dNOPROMPT -dMaxBitmap=500000000 -dAlignToPixels=0 -dGridFitTT=2 '-sDEVICE=png16malpha' -dTextAlphaBits=4 -dGraphicsAlphaBits=4 '-r72x72' -dPrinted=false -dFirstPage=1 -dLastPage=1 '-sOutputFile=/tmp/magick-bbxvnyWg1VTLpyTJT5JCvVrVaXNJZxPy%d' '-f/tmp/magick--9Db599FFu6qZXmQEU71Ar-FoqyxrFmu' '-f/tmp/magick-cwb4L6XJwnXIcRN0KLms58UJycXqNTTp'': Unknown device: png16malpha
@ error/ghostscript-private.h/InvokeGhostscriptDelegate/178
