# Pipeline error "pipeline-id" :exception=\>#\<Psych::DisallowedClass: Tried to load unspecified class: Time

**URL:** <https://discuss.elastic.co/t/pipeline-error-pipeline-id-exception-psych-tried-to-load-unspecified-class-time/336786>\
**Category:** Logstash\
**Created:** [June 23, 2023, 3:04pm UTC](https://discuss.elastic.co/t/pipeline-error-pipeline-id-exception-psych-tried-to-load-unspecified-class-time/336786 "2023-06-23T15:04:46Z")\
**Posts on this page:** 1\
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**Author:** ![Badger](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/badger/32/25190_2.png) [@Badger](https://discuss.elastic.co/u/Badger)\
**Post date:** [June 23, 2023, 4:08pm UTC](https://discuss.elastic.co/t/pipeline-error-pipeline-id-exception-psych-tried-to-load-unspecified-class-time/336786/2 "2023-06-23T16:08:32Z")

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> [@Gelinski](#):
>
> Could this be a bug?

Yes, see [this](https://discuss.elastic.co/t/possible-issue-with-tracking-column-type-timestamp-in-8-1-1/336255/2) thread. A fix has already been submitted. The exception occurs when the input tries to parse the YAML that is persisted in logstash\_jdbc\_last\_run. No YAML, no exception.

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_[View the full topic](https://discuss.elastic.co/t/pipeline-error-pipeline-id-exception-psych-tried-to-load-unspecified-class-time/336786)._