mkdocs serve error

[duqingnian]

PS D:\PAY\docs\cloudscripting-docs\plugins\markdown-tabs> cd ..
PS D:\PAY\docs\cloudscripting-docs\plugins> cd ..
PS D:\PAY\docs\cloudscripting-docs> mkdocs serve
INFO - DeprecationWarning: invalid escape sequence '\s'
File "C:\Python311\Lib\importlib_init_.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "d:\pay\docs\cloudscripting-docs\plugins\markdown-tabs\markdown-tabs.py", line 8, in
TABS_START = ur'^@@@\s*$'
WARNING - Config value 'theme_dir': Unrecognised configuration name: theme_dir
ERROR - Config value 'pages': The configuration option 'pages' was removed from MkDocs. Use 'nav' instead.
ERROR - Config value 'markdown_extensions': Failed to load extension 'markdown-tabs'.
SyntaxError: invalid syntax (markdown-tabs.py, line 8)

Aborted with 2 configuration errors!
PS D:\PAY\docs\cloudscripting-docs>