📅 Calendar Add-On + some calendar designs

Hi. I keep getting the following error on startup. Any ideas?


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 Add-on: Hass Calendar Addon
 Addon to consume caldav and google calendars and make calendar events available as sensordata in Home Assistant.
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 Add-on version: 0.501
 You are running the latest version of this add-on.
 System: Home Assistant OS 16.0  (aarch64 / raspberrypi4-64)
 Home Assistant Core: 2025.7.4
 Home Assistant Supervisor: 2025.07.3
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 Please, share the above information when looking for help
 or support in, e.g., GitHub, forums or the Discord chat.
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s6-rc: info: service base-addon-banner successfully started
s6-rc: info: service fix-attrs: starting
s6-rc: info: service base-addon-log-level: starting
s6-rc: info: service fix-attrs successfully started
s6-rc: info: service base-addon-log-level successfully started
s6-rc: info: service legacy-cont-init: starting
s6-rc: info: service legacy-cont-init successfully started
s6-rc: info: service legacy-services: starting
s6-rc: info: service legacy-services successfully started
/app/node_modules/undici/lib/web/webidl/index.js:512
webidl.is.File = webidl.util.MakeTypeAssertion(File)
                                               ^
ReferenceError: File is not defined
    at Object.<anonymous> (/app/node_modules/undici/lib/web/webidl/index.js:512:48)
    at Module._compile (node:internal/modules/cjs/loader:1364:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1422:10)
    at Module.load (node:internal/modules/cjs/loader:1203:32)
    at Module._load (node:internal/modules/cjs/loader:1019:12)
    at Module.require (node:internal/modules/cjs/loader:1231:19)
    at require (node:internal/modules/helpers:177:18)
    at Object.<anonymous> (/app/node_modules/undici/lib/web/fetch/util.js:12:20)
    at Module._compile (node:internal/modules/cjs/loader:1364:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1422:10)
Node.js v18.20.3