[SOLVED] SW-15.0 rolling upgrade from 14.2 & xpdf does not open .

Hello All , I've just recently updated my workstation to SW-15.0 via rolling upgrade from 14.2 .
And now xpdf does not open . The file selected below does open in Firefox , so the pdf s/b openable .

NEXT odd thing is that using sudo xpdf opens the same file in the same session of the user !?!?!

Code:$ xpdf vax_doc-20180323a.pdf
xpdf version 4.05 [www.xpdfreader.com]
Copyright 1996-2024 Glyph & Cog, LLC
Usage: xpdf [options] [<PDF-file> [:<page> | +<dest>]] ...
-open : open file using a default remote server
-rv : reverse video
-papercolor <string> : color of paper background
-mattecolor <string> : color of matte background
-fsmattecolor <string>: color of matte background in full-screen mode
-z <string> : initial zoom level (percent, 'page', 'width')
-rot <int> : initial page rotation: 0, 90, 180, or 270
-aa <string> : enable font anti-aliasing: yes, no
-aaVector <string> : enable vector anti-aliasing: yes, no
-enc <string> : output text encoding name
-pw <string> : password (for encrypted files)
-fullscreen : run in full-screen (presentation) mode
-remote <string> : remote server mode - remaining args are commands
-cmd : print commands as they're executed
-tabstate <string> : file for saving/loading tab state
-cfg <string> : configuration file to use in place of .xpdfrc
-v : print copyright and version info
-h : print usage information
-help : print usage information
--help : print usage information
-? : print usage informationCode:$ sudo xpdf vax_doc-20180323a.pdf
Password:
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'Then displays the file ... ???

What the heck is going on here ?