Cannot read property 'match' of undefined

[WizzerWorks]

/usr/local/lib/node_modules/pug/node_modules/pug-runtime/index.js:285
throw err;
^

TypeError: templates/mixins/itterate.pug:22
20| +itterate(item, item.title, obj)
21| else

22| - var schema = key.match(/^(properties)|(patternProperties)|(items)$/) ? obj : val
23| +itterate(item, name, schema)
24| else
25| dt

Cannot read property 'match' of undefined
at Object.eval (eval at wrap (/usr/local/lib/node_modules/pug/node_modules/pug-runtime/wrap.js:6:10), :172:18)
at Object.pug_interp [as itterate] (eval at wrap (/usr/local/lib/node_modules/pug/node_modules/pug-runtime/wrap.js:6:10), :178:4)
at Object.eval (eval at wrap (/usr/local/lib/node_modules/pug/node_modules/pug-runtime/wrap.js:6:10), :151:23)
at Object.pug_interp [as itterate] (eval at wrap (/usr/local/lib/node_modules/pug/node_modules/pug-runtime/wrap.js:6:10), :178:4)
at Object.eval (eval at wrap (/usr/local/lib/node_modules/pug/node_modules/pug-runtime/wrap.js:6:10), :174:23)
at Object.pug_interp [as itterate] (eval at wrap (/usr/local/lib/node_modules/pug/node_modules/pug-runtime/wrap.js:6:10), :178:4)
at Object.eval (eval at wrap (/usr/local/lib/node_modules/pug/node_modules/pug-runtime/wrap.js:6:10), :174:23)
at Object.pug_interp [as itterate] (eval at wrap (/usr/local/lib/node_modules/pug/node_modules/pug-runtime/wrap.js:6:10), :178:4)
at Object.eval (eval at wrap (/usr/local/lib/node_modules/pug/node_modules/pug-runtime/wrap.js:6:10), :174:23)
at Object.pug_interp [as itterate] (eval at wrap (/usr/local/lib/node_modules/pug/node_modules/pug-runtime/wrap.js:6:10), :178:4) {
path: 'templates/mixins/itterate.pug'
}

Pug Version: your version number here

Node Version: v12.22.9

Additional Comments

Using matic (https://github.com/mattyod/matic) with pug to process glTF 1.0 schemas.