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Hello.
I am trying to create a translation file:
pylupdate5.py3 untitled.ui -ts zh_FN.ts
I get an error:

Error:Traceback (most recent call last):
  File "/usr/lib64/python3.7/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib64/python3.7/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/usr/lib64/python3/site-packages/PyQt5/pylupdate_main.py", line 239, in <module>
    main()
  File "/usr/lib64/python3/site-packages/PyQt5/pylupdate_main.py", line 228, in main
    defaultContext, True)
UnicodeEncodeError: 'latin-1' codec can't encode characters in position 12-21: ordinal not in range(256)

For the test, I made an empty ui in Designer.
Wrong encoding again.
Coding everywhere utf-8

Ui file test:

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<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
 <class>MainWindow</class>
 <widget class="QMainWindow" name="MainWindow">
  <property name="geometry">
   <rect>
    <x>0</x>
    <y>0</y>
    <width>491</width>
    <height>323</height>
   </rect>
  </property>
  <property name="windowTitle">
   <string>MainWindow</string>
  </property>
  <widget class="QWidget" name="centralwidget">
   <layout class="QGridLayout" name="gridLayout">
    <item row="0" column="0" colspan="3">
     <widget class="QTextEdit" name="textEdit">
      <property name="html">
       <string>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
&lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
p, li { white-space: pre-wrap; }
&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Sans Serif'; font-size:9pt; font-weight:400; font-style:normal;&quot;&gt;
&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;Hi, I'm Zhenya.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
      </property>
     </widget>
    </item>
    <item row="1" column="0">
     <widget class="QPushButton" name="pushButton">
      <property name="text">
       <string>PushButton</string>
      </property>
     </widget>
    </item>
    <item row="1" column="1">
     <spacer name="horizontalSpacer">
      <property name="orientation">
       <enum>Qt::Horizontal</enum>
      </property>
      <property name="sizeHint" stdset="0">
       <size>
        <width>292</width>
        <height>20</height>
       </size>
      </property>
     </spacer>
    </item>
    <item row="1" column="2">
     <widget class="QPushButton" name="pushButton_2">
      <property name="text">
       <string>PushButton</string>
      </property>
     </widget>
    </item>
   </layout>
  </widget>
  <widget class="QStatusBar" name="statusbar"/>
 </widget>
 <resources/>
 <connections/>
</ui>

OS Linux
python 3.7.4
python3-module-PyQt5 5.11.3

I am new to Python.
Sorry if the question is stupid.

Koi