Build error

[milen-prg]

On Windows 11 Pro 64 bit:

mdbook build

ERROR Invalid configuration file
Caused by: TOML parse error at line 22, column 2
|
22 | [outputX.linkcheck]
| ^^^^^^^
unknown field outputX, expected one of book, build, rust, output, preprocessor

After fix the row:
22 | [outputX.linkcheck]
to
22 | [output.linkcheck]

❯ mdbook build
INFO Book building has started
[2025-12-06T13:43:21Z ERROR mdbook_admonish] Fatal error: Unable to parse the input
[2025-12-06T13:43:21Z ERROR mdbook_admonish] - Unable to parse the input
[2025-12-06T13:43:21Z ERROR mdbook_admonish] - invalid type: null, expected any valid TOML value at line 1 column 283
WARN Error writing the RenderContext to the backend, The pipe is being closed. (os error 232)
ERROR The "admonish" preprocessor exited unsuccessfully with exit code: 1 status

Is this repo abandoned?

[schungx]

It does not support the new 0.5 version of mdbook as yet. The new version introduces a large number of breaking changes.

Try 0.4.x.