Candid failed to decode for internal error

Developers
,
2

We need to implment our own Deserializer in this situation:

pub struct Suggection {
    pub id: i32,
    pub title: String,
    pub content: Option<String>,
    pub principal: String,
    #[serde(with = "timestamp_format")]
    pub created_at: time::OffsetDateTime,
}

mod timestamp_format {
    use candid::Deserialize;
    use serde::de::Error as SerdeError;
    use serde::{Deserializer, Serializer};
    use time::PrimitiveDateTime;
    use time::{Duration, OffsetDateTime};

    pub fn deserialize<'de, D>(deserializer: D) -> Result<OffsetDateTime, D::Error>
    where
        D: Deserializer<'de>,
    {
        let timestamp = u128::deserialize(deserializer)?;
        Ok(OffsetDateTime::from_unix_timestamp_nanos(timestamp.try_into().unwrap()).unwrap())
    }
}