tclapp::install junit fails

unknown namespace in import pattern "::msgcat::mcload"
    while executing
"__namespace_orig $what {*}$args "
    (procedure "namespace" line 8)
    invoked from within
"namespace import ::msgcat::mcload"
    (in namespace eval "::tcl::clock" script line 15)
    invoked from within
"__namespace_orig $what {*}$args "
    (procedure "namespace" line 8)
    invoked from within
"namespace eval ::tcl::clock {

    # Export the subcommands

    namespace export format
    namespace export clicks
    namespace export microseconds..."
    (file "/opt/Xilinx/2025.1/Vivado/tps/tcl/tcl8.6/clock.tcl" line 47)
    invoked from within
"source -encoding utf-8 [file join $TclLibDir clock.tcl]"
    (procedure "::tcl::clock::format" line 6)
    invoked from within
"clock format [ clock seconds ] -format "%Y-%m-%dT%H:%M:%S" "
    (procedure "init" line 13)
    invoked from within
"init"
    (procedure "reset_results" line 15)
    invoked from within
"reset_results"
    (in namespace eval "::tclapp::xilinx::junit" script line 891)
    invoked from within
"__namespace_orig $what {*}$args "
    (procedure "namespace" line 8)
    invoked from within
"namespace eval ::tclapp::xilinx::junit {


####################################################################################################
# sect..."
    (file "/opt/Xilinx/2025.1/Vivado/data/XilinxTclStore/tclapp/xilinx/junit/JUnitAssertionMgr.tcl" line 47)
    invoked from within
"source [file join $dir $file]"
    ("foreach" body line 11)
    invoked from within
"foreach file [glob -directory $dir -tails -types {r f} *.tcl] {
            if {$file eq "pkgIndex.tcl"} {
                continue
            }
    ..."
    invoked from within
"$slave eval {

        set tcl::procs {}

        # Stub out package to avoid processing embedded package require
        rename package __package_ori..."
    (procedure "tclapp::support::appinit::load_app" line 29)
    invoked from within
"tclapp::support::appinit::load_app /opt/Xilinx/2025.1/Vivado/data/XilinxTclStore ::tclapp::xilinx::junit xilinx::junit"
ERROR: [Common 17-685] Unable to load Tcl app xilinx::junit```

Start by reproducing tclapp::install junit and follow the traceback into JUnitAssertionMgr.tcl at line 47 and Tcl's clock.tcl at line 47. Trace the ::msgcat::mcload import failure and confirm that the JUnit app can load successfully after the issue is addressed.