Error: Cannot read property 'replace' of undefined

[riccardolinares]

Expected behaviour

I am scanning the website https://www.paramount.com/about but I am getting an error.

Actual behaviour

error Error: Evaluation failed: TypeError: Cannot read property 'replace' of undefined
at Object.processFormControls (puppeteer_evaluation_script:32:285003)
at Object.process (puppeteer_evaluation_script:32:280173)
at m (puppeteer_evaluation_script:32:288962)
at c (puppeteer_evaluation_script:32:288568)
at Object.c.run (puppeteer_evaluation_script:32:287951)
at puppeteer_evaluation_script:32:286810
at puppeteer_evaluation_script:32:287071
at h (puppeteer_evaluation_script:32:289574)
at puppeteer_evaluation_script:32:289615
at a (puppeteer_evaluation_script:32:289700)
at ExecutionContext._evaluateInternal (C:\Users\linar\Desktop\accessibility\node_modules\pa11y\node_modules\puppeteer\lib\cjs\puppeteer\common\ExecutionContext.js:221:19)
at processTicksAndRejections (node:internal/process/task_queues:96:5)
at async ExecutionContext.evaluate (C:\Users\linar\Desktop\accessibility\node_modules\pa11y\node_modules\puppeteer\lib\cjs\puppeteer\common\ExecutionContext.js:110:16)
at async runPa11yTest (C:\Users\linar\Desktop\accessibility\node_modules\pa11y\lib\pa11y.js:87:18)
at async C:\Users\linar\Desktop\accessibility\node_modules\p-timeout\index.js:50:13

Steps to reproduce

Run a test on this website: https://www.paramount.com/about

Environment

System:
OS: Windows 10 10.0.19044
CPU: (4) x64 Intel(R) Core(TM) i7-3537U CPU @ 2.00GHz
Memory: 1.19 GB / 7.45 GB
Binaries:
Node: 16.4.0 - C:\Program Files\nodejs\node.EXE
Yarn: 1.22.17 - ~\AppData\Roaming\npm\yarn.CMD
npm: 8.9.0 - C:\Program Files\nodejs\npm.CMD
pa11y: 6.2.3

[riccardolinares]

Solved. It was not related to Pa11y.

[simonhudson]

Hey @riccardolinares, sorry to resurrect a dead thread, but would you mind sharing your solution for this please? I'm having a similar issue when running pa11y 6.2.3. I suspect it's a Puppeteer issue, but could use a point in the right direction. Thanks in advance.

[riccardolinares]

Hi @simonhudson
in my case it was related to the translations. I was translating pa11y to Italian, but the it.js inside html_codesniffer node module was not formatted well.

I created it from scratch (starting from the en version), built using the gruntfile.js and now it works fine :)

let me know if it solved the problem.

[simonhudson]

@riccardolinares Thanks for the prompt response 👍

Looks like mine is an issue with html_codesniffer as well, quite possibly caused by the same malformed file which you saw.

Inspired by this reply to a similar issue, I ran npm install --save-dev axe-core and specified axe as my test runner, rather than the default htmlcs. It doesn't solve the problem with html_codesniffer, but it does seem to provide a work around.

pa11y(url, { runners: ['axe'] })
    .then(results => {
        // Do stuff with results
    })
    .catch(error => {
        // Do stuff with error
    });