Your ROOT_URL in app.ini is https://scm.trinitydesktop.org/gitea/ but you are visiting https://scm.trinitydesktop.net/gitea/TDE/tde-i18n/blame/commit/654943f64061b7666c6f368b4cddacdb46121e72/tde-i18n-sk/messages/tdegraphics/kcm_kviewviewerpluginsconfig.po
You should set ROOT_URL correctly, otherwise the web may not work correctly.
# translation of kcm_kviewviewerpluginsconfig.po to Slovak
# Copyright (C) 2003 Free Software Foundation, Inc.
# Stanislav Visnovsky <visnovsky@kde.org>, 2003.
#
msgid ""
msgstr ""
"Project-Id-Version: kcm_kviewviewerpluginsconfig\n"
"POT-Creation-Date: 2020-05-11 04:04+0200\n"
"PO-Revision-Date: 2003-12-20 18:24+0100\n"
"Last-Translator: Stanislav Visnovsky <visnovsky@kde.org>\n"
"Language-Team: Slovak <sk-i18n@linux.sk>\n"
"Language: sk\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"X-Generator: KBabel 1.3\n"
"Plural-Forms: nplurals=3; plural=(n==1) ? 0 : (n>=2 && n<=4) ? 1 : 2;\n"
#. Instead of a literal translation, add your name to the end of the list (separated by a comma).
msgid ""
"_: NAME OF TRANSLATORS\n"
"Your names"
msgstr ""
#. Instead of a literal translation, add your email to the end of the list (separated by a comma).
msgid ""
"_: EMAIL OF TRANSLATORS\n"
"Your emails"
msgstr ""
#: kviewviewerpluginsconfig.cpp:37
msgid "Viewer"
msgstr "Prehliadač"