I have the same device ( RB941 TC-2nd haplite ) and I faced the same issue as mr.pooria.
installing the initram is ok . but when I want to install the sysupgrade both from ssh or web luci interface , both fail.
installing from webinterface halts on verifiying image.
installing from ssh gives some errors
Killed
Failed to parse message data
sh: out of range
Killed
someone had the same issue in this topic:
it seems the problem is a space in the name of the image something they talked about and solved in this topic:
so we need someone to patch sysupgrade version 19 image for RB941 to fix this error.