raphy@raohy:~/gtkmm-4.8.0$ meson setup --prefix /usr --libdir lib your_builddir .
The Meson build system
Version: 1.3.0
Source dir: /home/raphy/gtkmm-4.8.0
Build dir: /home/raphy/gtkmm-4.8.0/your_builddir
对于大小限制，我将命令的整个输出放在了meson setup --prefix /usr --libdir lib your_builddir .Google Drive 中：https://drive.google.com/file/d/1kvP_xitHnRaVyNmXLOy7ZBtjdP1zZyev/view?usp=drive_link
执行 ninja 出现此错误：
raphy@raohy:~/gtkmm-4.8.0/your_builddir$ ninja
[125/2744] Generating subprojects/libsigcplusplus/docs/docs/manual/manual_html with a custom command
FAILED: subprojects/libsigcplusplus/docs/docs/manual/html
/usr/bin/python3 /home/raphy/gtkmm-4.8.0/subprojects/libsigcplusplus/tools/tutorial-custom-cmd.py html ../subprojects/libsigcplusplus/docs/docs/manual/libsigc_manual.xml subprojects/libsigcplusplus/docs/docs/manual/html
error : Unknown IO error
warning: failed to load external entity "http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl"
cannot parse http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl
[134/2744] Generating subprojects/libsigcplusplus/docs/docs/reference/html_and_tag with a custom command
ninja: build stopped: subcommand failed.
如何让它工作？