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-U3vf7k-lqZSZIaMJdmL6vCAbqpHy8979%d' '-f/tmp/magick-6DnmtysbialD6tWGecDsoDlx2tcMXMdT' '-f/tmp/magick-5x7jbUr24xo9-y1DJvBfnLN-wQDPqokC'': Unknown device: png16malpha
@ error/ghostscript-private.h/InvokeGhostscriptDelegate/178
