Cannot read properties of null (reading 'childNodes')

[zbh876325764]

I have a problem,This is the minimum implementation.

var mjAPI = require("mathjax-node");
try{
mjAPI.typeset({
  math: '\n<math display=\"block\" xmlns=\"http://www.w3.org/1998/Math/MathML\">\n\t<mrow>\n\t\t<mi>𝜟</mi>\n\t\t<msub>\n\t\t\t<mi>𝝂</mi>\n\t\t\t<mi>𝑫</mi>\n\t\t</msub>\n\t\t<mo>=</mo>\n\t\t<mi>𝟕</mi>\n\t\t<mo>.</mo>\n\t\t<mi>𝟏</mi>\n\t\t<mi>𝟔</mi>\n\t\t<mo>×</mo>\n\t\t<mi>𝟏</mi>\n\t\t<msup>\n\t\t\t<mi>𝟎</mi>\n\t\t\t<mrow>\n\t\t\t\t<mo>−</mo>\n\t\t\t\t<mi>𝟕</mi>\n\t\t\t</mrow>\n\t\t</msup>\n\t\t<msqrt>\n\t\t\t<msub>\n\t\t\t\t<mi>𝑻</mi>\n\t\t\t\t<mo>/</mo>\n\t\t\t\t<mi>𝝁</mi>\n\t\t\t\t<mrow>\n\t\t\t\t\t<mi>𝒎</mi>\n\t\t\t\t\t<mi>𝒐</mi>\n\t\t\t\t\t<mi>𝒍</mi>\n\t\t\t\t</mrow>\n\t\t\t</msub>\n\t\t</msqrt>\n\t\t<mo>⋅</mo>\n\t\t<msub>\n\t\t\t<mi>𝝂</mi>\n\t\t\t<mi>𝟎</mi>\n\t\t</msub>\n\t</mrow>\n</math>',
  format: "MathML",
  html: true,
  css: true,
}, function (data) {console.log(data)});
}catch(error){
console.log(error)
}

[pkra]

The configuration asks for HTML/CSS output ( html: true,) so there will be no SVG output. Try svg: true, instead.

[pkra]

Also: mathjax-node is outdated. Since MathJax v3 you can use it in nodejs directly, see https://github.com/mathjax/MathJax-demos-node/ for examples.

[zbh876325764]

配置要求 HTML/CSS 输出 ( html: true,)，因此不会有 SVG 输出。试试svg: true,吧。

sorry,I write it wrongly

[zbh876325764]

Also: mathjax-node is outdated. Since MathJax v3 you can use it in nodejs directly, see https://github.com/mathjax/MathJax-demos-node/ for examples. Thank you, I'll try