Two screenshots, could not get image saving to work. One is MLV App 1.3 (should be same as 1.4), other is 1.5 - the new one is a bit less sharp, sharpening for both was set at 60 (same MASXML)

![screenshot from 2019-02-03 23-25-28](https://user-images.git

Hardware: Raspberry 4B+
Software: Ununtu 18.04
I have met the following problems when executed the command line:
$ sudo make linux-arm
npm WARN lantern-ui@0.0.10-0 license should be a valid SPDX license expression
[10:16:58] Using gulpfile ~/Downloads/lantern/archive/lantern-ui/gulpfile.js
[10:16:58] Starting 'clean'...
[10:16:58] Starting 'usemin'...
[10:16:58] Starting 'copy'...
[10:16: