Cannot read properties of undefined (reading 'pollution')

TypeError: Cannot read properties of undefined (reading 'pollution')
    at ExperimentMyWeather (file:///var/task/app/elements/experiment/my-weather.mjs:107:27)
    at renderTemplate (file:///var/task/node_modules/@enhance/ssr/index.mjs:205:21)
    at expandTemplate (file:///var/task/node_modules/@enhance/ssr/index.mjs:149:16)
    at file:///var/task/node_modules/@enhance/ssr/index.mjs:39:15
    at walk (file:///var/task/node_modules/@enhance/ssr/lib/walk.mjs:2:7)
    at walk (file:///var/task/node_modules/@enhance/ssr/lib/walk.mjs:14:11)
    at walk (file:///var/task/node_modules/@enhance/ssr/lib/walk.mjs:14:11)
    at processCustomElements (file:///var/task/node_modules/@enhance/ssr/index.mjs:27:5)
    at html (file:///var/task/node_modules/@enhance/ssr/index.mjs:78:9)
    at render (file:///var/task/node_modules/@enhance/core/src/route-and-render.js:218:26)