I've encountered an issue with a form; it suddenly stopped loading and now only shows a spinning circle. All other forms appear to be working fine.

When I publish the form and open it, it shows a blank screen. In the developer console, it shows the following error message.

vendor.js:74ERROR TypeError: Cannot read properties of undefined (reading 'readOnly') atmodernForms.bundle.js:1:191158 at e.exports (modernForms.bundle.js:1:97944) at e.exports (modernForms.bundle.js:1:123333) at e.processFormulasOnLoad (modernForms.bundle.js:1:189727) at Object.postProcess (modernForms.bundle.js:1:204858) atmain.js:1:61863 atvendor.js:43:43566 at x._next (vendor.js:43:40283) at x.next (vendor.js:43:29004) at x._next (vendor.js:43:29318)