When selecting Website > Site > Pages > Kanban view the below server error is returned.

This was discovered after performing Run Click Everywhere Test

I could resolve the error by un-installing and re-installing website_sale and website which is fine on a development test system, however the production system also has the exact same problem.  Rebuilding the production website pages would rather be avoided. Other Odoo instances on the same development test system did not have the problem, so unsure when it started or what has caused it, and installed apps differ on each of the development test instances, one having no custom modules, just standard apps.

UncaughtPromiseError > OwlError

Uncaught Promise > An error occured in the owl lifecycle (see this Error's "cause" property)

OwlError: An error occured in the owl lifecycle (see this Error's "cause" property)

    at handleError (https://dev.somedomain.com/web/assets/439-961dc7b/web.assets_common.min.js:1472:101)

    at owl.App.handleError (https://dev.somedomain.com/web/assets/439-961dc7b/web.assets_common.min.js:2098:29)

    at Fiber._render (https://dev.somedomain.com/web/assets/439-961dc7b/web.assets_common.min.js:1497:19)

    at Fiber.render (https://dev.somedomain.com/web/assets/439-961dc7b/web.assets_common.min.js:1495:6)

    at ComponentNode.initiateRender (https://dev.somedomain.com/web/assets/439-961dc7b/web.assets_common.min.js:1563:47)

Caused by: TypeError: Cannot read properties of undefined (reading 'value')

    at KanbanRecord.template (eval at compile (https://dev.somedomain.com/web/assets/439-961dc7b/web.assets_common.min.js:2056:374), :19:34)

    at owl.App.callTemplate (https://dev.somedomain.com/web/assets/439-961dc7b/web.assets_common.min.js:1717:129)

    at KanbanRecord.template (eval at compile (https://dev.somedomain.com/web/assets/439-961dc7b/web.assets_common.min.js:2056:374), :16:16)

    at Fiber._render (https://dev.somedomain.com/web/assets/439-961dc7b/web.assets_common.min.js:1496:96)

    at Fiber.render (https://dev.somedomain.com/web/assets/439-961dc7b/web.assets_common.min.js:1495:6)

    at ComponentNode.initiateRender (https://dev.somedomain.com/web/assets/439-961dc7b/web.assets_common.min.js:1563:47)

Thanks, and kind regards,

Anthony