We are currently solving the following issue within our repository. Here is the issue text:
--- BEGIN ISSUE ---
The config value `html_favicon' has type `PosixPath'; expected `str'.
BTW when building the docs now I get
```
WARNING: The config value `html_favicon' has type `PosixPath'; expected `str'.
```

_Originally posted by @leotrs in https://github.com/ManimCommunity/manim/pull/631#issuecomment-719075737_

--- END ISSUE ---

Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
--- BEGIN FILES ---
Path: `docs/source/conf.py`
Content:
```
1 # Configuration file for the Sphinx documentation builder.
2 #
3 # This file only contains a selection of the most common options. For a full
4 # list see the documentation:
5 # https://www.sphinx-doc.org/en/master/usage/configuration.html
6 
7 # -- Path setup --------------------------------------------------------------
8 
9 # If extensions (or modules to document with autodoc) are in another directory,
10 # add these directories to sys.path here. If the directory is relative to the
11 # documentation root, use os.path.abspath to make it absolute, like shown here.
12 
13 import os
14 import subprocess
15 import sys
16 from distutils.sysconfig import get_python_lib
17 from pathlib import Path
18 
19 sys.path.insert(0, os.path.abspath("."))
20 
21 
22 if os.environ.get("READTHEDOCS") == "True":
23     site_path = get_python_lib()
24     # bindings for pangocffi, cairocffi, pangocairocffi need to be generated
25     subprocess.run(["python", "pangocffi/ffi_build.py"], cwd=site_path)
26     subprocess.run(["python", "cairocffi/ffi_build.py"], cwd=site_path)
27     subprocess.run(["python", "pangocairocffi/ffi_build.py"], cwd=site_path)
28     # we need to add ffmpeg to the path
29     ffmpeg_path = os.path.join(site_path, "imageio_ffmpeg", "binaries")
30     # the included binary is named ffmpeg-linux..., create a symlink
31     [ffmpeg_bin] = [
32         file for file in os.listdir(ffmpeg_path) if file.startswith("ffmpeg-")
33     ]
34     os.symlink(
35         os.path.join(ffmpeg_path, ffmpeg_bin), os.path.join(ffmpeg_path, "ffmpeg")
36     )
37     os.environ["PATH"] += os.pathsep + ffmpeg_path
38 
39 
40 # -- Project information -----------------------------------------------------
41 
42 project = "Manim"
43 copyright = "2020, The Manim Community Dev Team"
44 author = "The Manim Community Dev Team"
45 
46 
47 # -- General configuration ---------------------------------------------------
48 
49 # Add any Sphinx extension module names here, as strings. They can be
50 # extensions coming with Sphinx (named 'sphinx.ext.*') or your custom
51 # ones.
52 extensions = [
53     "sphinx.ext.autodoc",
54     "recommonmark",
55     "sphinx_copybutton",
56     "sphinx.ext.napoleon",
57     "sphinx.ext.autosummary",
58     "sphinx.ext.doctest",
59     "manim_directive",
60 ]
61 
62 # Automatically generate stub pages when using the .. autosummary directive
63 autosummary_generate = True
64 
65 # Add any paths that contain templates here, relative to this directory.
66 templates_path = ["_templates"]
67 
68 # List of patterns, relative to source directory, that match files and
69 # directories to ignore when looking for source files.
70 # This pattern also affects html_static_path and html_extra_path.
71 exclude_patterns = []
72 
73 
74 # -- Options for HTML output -------------------------------------------------
75 
76 # The theme to use for HTML and HTML Help pages.  See the documentation for
77 # a list of builtin themes.
78 #
79 import guzzle_sphinx_theme
80 
81 html_theme_path = guzzle_sphinx_theme.html_theme_path()
82 html_theme = "guzzle_sphinx_theme"
83 html_favicon = Path("_static/favicon.ico")
84 
85 # There's a standing issue with Sphinx's new-style sidebars.  This is a
86 # workaround.  Taken from
87 # https://github.com/guzzle/guzzle_sphinx_theme/issues/33#issuecomment-637081826
88 html_sidebars = {"**": ["logo-text.html", "globaltoc.html", "searchbox.html"]}
89 
90 # Register the theme as an extension to generate a sitemap.xml
91 extensions.append("guzzle_sphinx_theme")
92 
93 # Add any paths that contain custom static files (such as style sheets) here,
94 # relative to this directory. They are copied after the builtin static files,
95 # so a file named "default.css" will overwrite the builtin "default.css".
96 html_static_path = ["_static"]
97 
98 # This specifies any additional css files that will override the theme's
99 html_css_files = ["custom.css"]
100
```
--- END FILES ---

Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.

Here is an example:

```diff
diff --git a/examples/server_async.py b/examples/server_async.py
--- a/examples/server_async.py
+++ b/examples/server_async.py
@@ -313,4 +313,4 @@
 
 
 if __name__ == "__main__":
-    asyncio.run(run_async_server("."), debug=True)
+    asyncio.run(run_async_server(), debug=True)
diff --git a/examples/server_sync.py b/examples/server_sync.py
--- a/examples/server_sync.py
+++ b/examples/server_sync.py
@@ -313,5 +313,5 @@
 
 
 if __name__ == "__main__":
-    server = run_sync_server(".")
+    server = run_sync_server()
     server.shutdown()

```

diff --git a/docs/source/conf.py b/docs/source/conf.py
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -80,7 +80,7 @@
 
 html_theme_path = guzzle_sphinx_theme.html_theme_path()
 html_theme = "guzzle_sphinx_theme"
-html_favicon = Path("_static/favicon.ico")
+html_favicon = str(Path("_static/favicon.ico"))
 
 # There's a standing issue with Sphinx's new-style sidebars.  This is a
 # workaround.  Taken from

{"golden_diff": "diff --git a/docs/source/conf.py b/docs/source/conf.py\n--- a/docs/source/conf.py\n+++ b/docs/source/conf.py\n@@ -80,7 +80,7 @@\n \n html_theme_path = guzzle_sphinx_theme.html_theme_path()\n html_theme = \"guzzle_sphinx_theme\"\n-html_favicon = Path(\"_static/favicon.ico\")\n+html_favicon = str(Path(\"_static/favicon.ico\"))\n \n # There's a standing issue with Sphinx's new-style sidebars.  This is a\n # workaround.  Taken from\n", "issue": "The config value `html_favicon' has type `PosixPath'; expected `str'.\nBTW when building the docs now I get\r\n```\r\nWARNING: The config value `html_favicon' has type `PosixPath'; expected `str'.\r\n```\r\n\r\n_Originally posted by @leotrs in https://github.com/ManimCommunity/manim/pull/631#issuecomment-719075737_\n", "before_files": [{"content": "# Configuration file for the Sphinx documentation builder.\n#\n# This file only contains a selection of the most common options. For a full\n# list see the documentation:\n# https://www.sphinx-doc.org/en/master/usage/configuration.html\n\n# -- Path setup --------------------------------------------------------------\n\n# If extensions (or modules to document with autodoc) are in another directory,\n# add these directories to sys.path here. If the directory is relative to the\n# documentation root, use os.path.abspath to make it absolute, like shown here.\n\nimport os\nimport subprocess\nimport sys\nfrom distutils.sysconfig import get_python_lib\nfrom pathlib import Path\n\nsys.path.insert(0, os.path.abspath(\".\"))\n\n\nif os.environ.get(\"READTHEDOCS\") == \"True\":\n    site_path = get_python_lib()\n    # bindings for pangocffi, cairocffi, pangocairocffi need to be generated\n    subprocess.run([\"python\", \"pangocffi/ffi_build.py\"], cwd=site_path)\n    subprocess.run([\"python\", \"cairocffi/ffi_build.py\"], cwd=site_path)\n    subprocess.run([\"python\", \"pangocairocffi/ffi_build.py\"], cwd=site_path)\n    # we need to add ffmpeg to the path\n    ffmpeg_path = os.path.join(site_path, \"imageio_ffmpeg\", \"binaries\")\n    # the included binary is named ffmpeg-linux..., create a symlink\n    [ffmpeg_bin] = [\n        file for file in os.listdir(ffmpeg_path) if file.startswith(\"ffmpeg-\")\n    ]\n    os.symlink(\n        os.path.join(ffmpeg_path, ffmpeg_bin), os.path.join(ffmpeg_path, \"ffmpeg\")\n    )\n    os.environ[\"PATH\"] += os.pathsep + ffmpeg_path\n\n\n# -- Project information -----------------------------------------------------\n\nproject = \"Manim\"\ncopyright = \"2020, The Manim Community Dev Team\"\nauthor = \"The Manim Community Dev Team\"\n\n\n# -- General configuration ---------------------------------------------------\n\n# Add any Sphinx extension module names here, as strings. They can be\n# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom\n# ones.\nextensions = [\n    \"sphinx.ext.autodoc\",\n    \"recommonmark\",\n    \"sphinx_copybutton\",\n    \"sphinx.ext.napoleon\",\n    \"sphinx.ext.autosummary\",\n    \"sphinx.ext.doctest\",\n    \"manim_directive\",\n]\n\n# Automatically generate stub pages when using the .. autosummary directive\nautosummary_generate = True\n\n# Add any paths that contain templates here, relative to this directory.\ntemplates_path = [\"_templates\"]\n\n# List of patterns, relative to source directory, that match files and\n# directories to ignore when looking for source files.\n# This pattern also affects html_static_path and html_extra_path.\nexclude_patterns = []\n\n\n# -- Options for HTML output -------------------------------------------------\n\n# The theme to use for HTML and HTML Help pages.  See the documentation for\n# a list of builtin themes.\n#\nimport guzzle_sphinx_theme\n\nhtml_theme_path = guzzle_sphinx_theme.html_theme_path()\nhtml_theme = \"guzzle_sphinx_theme\"\nhtml_favicon = Path(\"_static/favicon.ico\")\n\n# There's a standing issue with Sphinx's new-style sidebars.  This is a\n# workaround.  Taken from\n# https://github.com/guzzle/guzzle_sphinx_theme/issues/33#issuecomment-637081826\nhtml_sidebars = {\"**\": [\"logo-text.html\", \"globaltoc.html\", \"searchbox.html\"]}\n\n# Register the theme as an extension to generate a sitemap.xml\nextensions.append(\"guzzle_sphinx_theme\")\n\n# Add any paths that contain custom static files (such as style sheets) here,\n# relative to this directory. They are copied after the builtin static files,\n# so a file named \"default.css\" will overwrite the builtin \"default.css\".\nhtml_static_path = [\"_static\"]\n\n# This specifies any additional css files that will override the theme's\nhtml_css_files = [\"custom.css\"]\n", "path": "docs/source/conf.py"}], "after_files": [{"content": "# Configuration file for the Sphinx documentation builder.\n#\n# This file only contains a selection of the most common options. For a full\n# list see the documentation:\n# https://www.sphinx-doc.org/en/master/usage/configuration.html\n\n# -- Path setup --------------------------------------------------------------\n\n# If extensions (or modules to document with autodoc) are in another directory,\n# add these directories to sys.path here. If the directory is relative to the\n# documentation root, use os.path.abspath to make it absolute, like shown here.\n\nimport os\nimport subprocess\nimport sys\nfrom distutils.sysconfig import get_python_lib\nfrom pathlib import Path\n\nsys.path.insert(0, os.path.abspath(\".\"))\n\n\nif os.environ.get(\"READTHEDOCS\") == \"True\":\n    site_path = get_python_lib()\n    # bindings for pangocffi, cairocffi, pangocairocffi need to be generated\n    subprocess.run([\"python\", \"pangocffi/ffi_build.py\"], cwd=site_path)\n    subprocess.run([\"python\", \"cairocffi/ffi_build.py\"], cwd=site_path)\n    subprocess.run([\"python\", \"pangocairocffi/ffi_build.py\"], cwd=site_path)\n    # we need to add ffmpeg to the path\n    ffmpeg_path = os.path.join(site_path, \"imageio_ffmpeg\", \"binaries\")\n    # the included binary is named ffmpeg-linux..., create a symlink\n    [ffmpeg_bin] = [\n        file for file in os.listdir(ffmpeg_path) if file.startswith(\"ffmpeg-\")\n    ]\n    os.symlink(\n        os.path.join(ffmpeg_path, ffmpeg_bin), os.path.join(ffmpeg_path, \"ffmpeg\")\n    )\n    os.environ[\"PATH\"] += os.pathsep + ffmpeg_path\n\n\n# -- Project information -----------------------------------------------------\n\nproject = \"Manim\"\ncopyright = \"2020, The Manim Community Dev Team\"\nauthor = \"The Manim Community Dev Team\"\n\n\n# -- General configuration ---------------------------------------------------\n\n# Add any Sphinx extension module names here, as strings. They can be\n# extensions coming with Sphinx (named 'sphinx.ext.*') or your custom\n# ones.\nextensions = [\n    \"sphinx.ext.autodoc\",\n    \"recommonmark\",\n    \"sphinx_copybutton\",\n    \"sphinx.ext.napoleon\",\n    \"sphinx.ext.autosummary\",\n    \"sphinx.ext.doctest\",\n    \"manim_directive\",\n]\n\n# Automatically generate stub pages when using the .. autosummary directive\nautosummary_generate = True\n\n# Add any paths that contain templates here, relative to this directory.\ntemplates_path = [\"_templates\"]\n\n# List of patterns, relative to source directory, that match files and\n# directories to ignore when looking for source files.\n# This pattern also affects html_static_path and html_extra_path.\nexclude_patterns = []\n\n\n# -- Options for HTML output -------------------------------------------------\n\n# The theme to use for HTML and HTML Help pages.  See the documentation for\n# a list of builtin themes.\n#\nimport guzzle_sphinx_theme\n\nhtml_theme_path = guzzle_sphinx_theme.html_theme_path()\nhtml_theme = \"guzzle_sphinx_theme\"\nhtml_favicon = str(Path(\"_static/favicon.ico\"))\n\n# There's a standing issue with Sphinx's new-style sidebars.  This is a\n# workaround.  Taken from\n# https://github.com/guzzle/guzzle_sphinx_theme/issues/33#issuecomment-637081826\nhtml_sidebars = {\"**\": [\"logo-text.html\", \"globaltoc.html\", \"searchbox.html\"]}\n\n# Register the theme as an extension to generate a sitemap.xml\nextensions.append(\"guzzle_sphinx_theme\")\n\n# Add any paths that contain custom static files (such as style sheets) here,\n# relative to this directory. They are copied after the builtin static files,\n# so a file named \"default.css\" will overwrite the builtin \"default.css\".\nhtml_static_path = [\"_static\"]\n\n# This specifies any additional css files that will override the theme's\nhtml_css_files = [\"custom.css\"]\n", "path": "docs/source/conf.py"}]}