Codemirror loading fails in certain circumstances due to innerCodeElem reference #4547

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OVERLORD · 2026-02-05T09:04:46+03:00

OVERLORD commented

2026-02-05 09:04:46 +03:00

Originally created by @ssddanbrown on GitHub (Mar 28, 2024).

Error thrown when viewing page:

Uncaught (in promise) TypeError: innerCodeElem is null
    highlightElem index.mjs:58
    highlight index.mjs:93
    setup page-display.js:38
    promise callback*setup page-display.js:38
    initComponent components.js:95
    init components.js:122
    <anonymous> app.js:37

Can reproduce with the following in the MD editor: (ignoring backslashes)

\```
   blank format
\```

Reported by Reddit user BaccanoMob here.

Originally created by @ssddanbrown on GitHub (Mar 28, 2024). Error thrown when viewing page: ``` Uncaught (in promise) TypeError: innerCodeElem is null highlightElem index.mjs:58 highlight index.mjs:93 setup page-display.js:38 promise callback*setup page-display.js:38 initComponent components.js:95 init components.js:122 <anonymous> app.js:37 ``` Can reproduce with the following in the MD editor: (ignoring backslashes) ``` \``` blank format \``` ``` Reported by [Reddit user BaccanoMob here](https://www.reddit.com/r/BookStack/comments/1bpqga0/how_do_i_make_the_code_block_with_line_numbers/).

OVERLORD added the 🐛 Bug 💻 Front-End labels 2026-02-05 09:04:46 +03:00

OVERLORD closed this issue

2026-02-05 09:04:47 +03:00

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Reference: starred/BookStack#4547

Codemirror loading fails in certain circumstances due to innerCodeElem reference #4547

Codemirror loading fails in certain circumstances due to `innerCodeElem` reference #4547