# While editing saved as draft form: attempt to invoke interface method 'int java.util.list.size()' on a null object reference

**URL:** <https://forum.getodk.org/t/while-editing-saved-as-draft-form-attempt-to-invoke-interface-method-int-java-util-list-size-on-a-null-object-reference/38670>\
**Category:** Support\
**Created:** [August 17, 2022, 4:24am UTC](https://forum.getodk.org/t/while-editing-saved-as-draft-form-attempt-to-invoke-interface-method-int-java-util-list-size-on-a-null-object-reference/38670 "2022-08-17T04:24:55Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Grzesiek2010](https://getodk.b-cdn.net/user_avatar/forum.getodk.org/grzesiek2010/32/2881_2.png) [@Grzesiek2010](https://forum.getodk.org/u/Grzesiek2010)\
**Post date:** [August 22, 2022, 4:59pm UTC](https://forum.getodk.org/t/while-editing-saved-as-draft-form-attempt-to-invoke-interface-method-int-java-util-list-size-on-a-null-object-reference/38670/2 "2022-08-22T16:59:33Z")

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Hi @ssraza  
Welcome to the ODK forum. We're glad you're here. When you get a chance, please [introduce yourself on this forum thread](https://forum.getodk.org/t/-/6671). I'd also encourage you to add a picture as your avatar because it helps build community!

What version of ODK Collect are you using?  
Is it a problem with just that one form? If so could you share it here?

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_[View the full topic](https://forum.getodk.org/t/while-editing-saved-as-draft-form-attempt-to-invoke-interface-method-int-java-util-list-size-on-a-null-object-reference/38670)._