howto debug nuxt instance unavailable? - nuxtjs3

Question

i'm working on a nuxt 3 project.
i've created a composable useAvailabilityRoom.ts but suddendy, it stopped working to throw this error :
Error: nuxt instance unavailable 10:42:04
at Module.useNuxtApp (/Users/chilperic/Sites/cabinetpartage/node_modules/nuxt/dist/app/nuxt.mjs:165:13)
at Module.useAsyncData (/Users/chilperic/Sites/cabinetpartage/node_modules/nuxt/dist/app/composables/asyncData.mjs:24:38)
at Module.useFetch (/Users/chilperic/Sites/cabinetpartage/node_modules/nuxt/dist/app/composables/fetch.mjs:52:43)
at Module.__vite_ssr_exports__.default (/Users/chilperic/Sites/cabinetpartage/composables/useUsers.ts:6:55)
at Module.__vite_ssr_exports__.default (/Users/chilperic/Sites/cabinetpartage/composables/useRoomAvailability.ts:61:55)
at processTicksAndRejections (node:internal/process/task_queues:96:5)
at async setup (/Users/chilperic/Sites/cabinetpartage/pages/salles/[idLocation]/[idRoom].vue:59:12)
my call in page component
try {
const roomAvailability = await useRoomAvailability(route.params.idRoom);
} catch (e) {
console.log(e);
}
my composable code
class RoomSchedule {
roomId: String = "";
days = [
"monday",
"tuesday",
"wednesday",
"thursday",
"friday",
"saturday",
"sunday",
];
monday = [];
tuesday = [];
wednesday = [];
thursday = [];
friday = [];
saturday = [];
sunday = [];
constructor(roomId: String) {
this.roomId = roomId;
}
checkAvailability(profile) {
for (let d in this.days) {
if (
profile.weekly_schedule[this.days[d]] !== false &&
profile.weekly_schedule[this.days[d]][this.roomId] !==
undefined &&
profile.weekly_schedule[this.days[d]][this.roomId] == true
) {
// on crée un objet de rendez-vous
const apt = {
begins_at: "07:00",
ends_at: "20:00",
name: profile.first_name + " " + profile.last_name,
job: profile.job,
user: profile.user_id,
};
// on compare les deux objets pour ne pas insérer un doublon
if (
this[this.days[d]].find(
(element) =>
JSON.stringify(element) === JSON.stringify(apt)
) == undefined
) {
this[this.days[d]].push({
begins_at: "07:00",
ends_at: "20:00",
name: profile.first_name + " " + profile.last_name,
job: profile.job,
user: profile.user_id,
});
}
} else {
// console.log("rien pour " + this.days[d]);
}
}
return true;
}
}
export default async (roomId: String) => {
// récupérer la dispo de la salle
const locationsObject = await useLocations();
const locations = Object.values({ ...locationsObject });
const room = locations.filter((el) => el.identifier == roomId);
const roomAvailability = toRaw(room[0]).availability;
let Schedule = new RoomSchedule(roomId);
// récupérer les résa des thérapeutes en bail
const profiles = await useUsers();
for (let av in profiles) {
// on parcourt les jours et on regarde s'il y a des thérapeutes au bail
for (let day in profiles[av].weekly_schedule) {
await Schedule.checkAvailability(profiles[av]);
}
}
return Schedule;
};
If i log the checkAvailability content, i have the right data.
I don't understand how to fix this error. Hope you can see what's wrong.