```
C:\work\study\languages\typescript\jerryscript>python tools/run-tests.py --test262-esnext=update
[1;34mBuild command:[0m
[1;34mC:\Program Files\Python39\python.exe \[0m
        [1;34mC:\work\study\languages\typescript\jerryscript\tools\build.py \[0m
        [1;34m--profile=es.next \[0m
        [1;34m--function-to-string=on \[0m
        [1;34m--line-info=on \[0m
        [1;34m--error-messages=on \[0m
        [1;34m--mem-heap=20480 \[0m
        [1;34m--builddir=C:\work\study\languages\typescript\jerryscript\build\tests\test262_tests_esnext \[0m
        [1;34m--install=C:\work\study\languages\typescript\jerryscript\build\tests\test262_tests_esnext\local[0m
[1;34mTest command:[0m
[1;34mTZ='America/Los_Angeles' \[0m
[1;34mC:\Program Files\Python39\python.exe \[0m
        [1;34mC:\work\study\languages\typescript\jerryscript\tools\runners/run-test-suite-test262.py \[0m
        [1;34m--engine \[0m
        [1;34mC:\work\study\languages\typescript\jerryscript\build\tests\test262_tests_esnext\local\bin\jerry.exe \[0m
        [1;34m--test262-object \[0m
        [1;34m--test-dir \[0m
        [1;34mC:\work\study\languages\typescript\jerryscript\tests/test262 \[0m
        [1;34m--esnext \[0m
        [1;34mupdate[0m
Traceback (most recent call last):
  File "C:\work\study\languages\typescript\jerryscript\tools\runners\test262-harness.py", line 955, in <module>
    sys.exit(main())
  File "C:\work\study\languages\typescript\jerryscript\tools\runners\test262-harness.py", line 945, in main
    code = test_suite.run(options.command, args,
  File "C:\work\study\languages\typescript\jerryscript\tools\runners\test262-harness.py", line 872, in run
    progress.has_run(result)
  File "C:\work\study\languages\typescript\jerryscript\tools\runners\test262-harness.py", line 698, in has_run
    result.report_outcome(True)
  File "C:\work\study\languages\typescript\jerryscript\tools\runners\test262-harness.py", line 453, in report_outcome
    self.write_output(sys.stdout)
  File "C:\work\study\languages\typescript\jerryscript\tools\runners\test262-harness.py", line 467, in write_output
    target.write(u"--- errors ---  \n %s" % error)
UnicodeEncodeError: 'gbk' codec can't encode character '\xab' in position 73: illegal multibyte sequence
.........=== Summary - updating excludelist ===

Excludelist was already up-to-date.

```
test262-harness.py complain write error with python3 
This is a GitHub Issue
repo:jerryscript
owner:jerryscript-project
Title : test262-harness.py complain write error with python3 
Issue date:

--- start body ---
```
C:\work\study\languages\typescript\jerryscript>python tools/run-tests.py --test262-esnext=update
[1;34mBuild command:[0m
[1;34mC:\Program Files\Python39\python.exe \[0m
        [1;34mC:\work\study\languages\typescript\jerryscript\tools\build.py \[0m
        [1;34m--profile=es.next \[0m
        [1;34m--function-to-string=on \[0m
        [1;34m--line-info=on \[0m
        [1;34m--error-messages=on \[0m
        [1;34m--mem-heap=20480 \[0m
        [1;34m--builddir=C:\work\study\languages\typescript\jerryscript\build\tests\test262_tests_esnext \[0m
        [1;34m--install=C:\work\study\languages\typescript\jerryscript\build\tests\test262_tests_esnext\local[0m
[1;34mTest command:[0m
[1;34mTZ='America/Los_Angeles' \[0m
[1;34mC:\Program Files\Python39\python.exe \[0m
        [1;34mC:\work\study\languages\typescript\jerryscript\tools\runners/run-test-suite-test262.py \[0m
        [1;34m--engine \[0m
        [1;34mC:\work\study\languages\typescript\jerryscript\build\tests\test262_tests_esnext\local\bin\jerry.exe \[0m
        [1;34m--test262-object \[0m
        [1;34m--test-dir \[0m
        [1;34mC:\work\study\languages\typescript\jerryscript\tests/test262 \[0m
        [1;34m--esnext \[0m
        [1;34mupdate[0m
Traceback (most recent call last):
  File "C:\work\study\languages\typescript\jerryscript\tools\runners\test262-harness.py", line 955, in <module>
    sys.exit(main())
  File "C:\work\study\languages\typescript\jerryscript\tools\runners\test262-harness.py", line 945, in main
    code = test_suite.run(options.command, args,
  File "C:\work\study\languages\typescript\jerryscript\tools\runners\test262-harness.py", line 872, in run
    progress.has_run(result)
  File "C:\work\study\languages\typescript\jerryscript\tools\runners\test262-harness.py", line 698, in has_run
    result.report_outcome(True)
  File "C:\work\study\languages\typescript\jerryscript\tools\runners\test262-harness.py", line 453, in report_outcome
    self.write_output(sys.stdout)
  File "C:\work\study\languages\typescript\jerryscript\tools\runners\test262-harness.py", line 467, in write_output
    target.write(u"--- errors ---  \n %s" % error)
UnicodeEncodeError: 'gbk' codec can't encode character '\xab' in position 73: illegal multibyte sequence
.........=== Summary - updating excludelist ===

Excludelist was already up-to-date.

```
--- end body ---

The issue reported is a UnicodeEncodeError occurring in the test262-harness.py script when attempting to write output to the console. This is not a security vulnerability but rather a problem with character encoding that affects the functionality of the test runner.