# ERROR: No applicable\_savers found for UNKNOWN

**URL:** <https://discourse.julialang.org/t/error-no-applicable-savers-found-for-unknown/60339>\
**Category:** Data\
**Tags:** save\
**Created:** [April 30, 2021, 7:08pm UTC](https://discourse.julialang.org/t/error-no-applicable-savers-found-for-unknown/60339 "2021-04-30T19:08:42Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![t-pollington](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/t-pollington/32/20074_2.png) [@t-pollington](https://discourse.julialang.org/u/t-pollington)\
**Post date:** [April 30, 2021, 7:08pm UTC](https://discourse.julialang.org/t/error-no-applicable-savers-found-for-unknown/60339/1 "2021-04-30T19:08:43Z")

</div>

Got this error coming from `FileIO.save` which had no Google search results to help. I ran:

`save("filename","varname", var)`

Turns out I forgot to include the file extension! This fixed it

`save("filename.jld","varname", var)`

---

<div class="post-metadata">

**Author:** ![iHany](https://sea2.discourse-cdn.com/julialang/user_avatar/discourse.julialang.org/ihany/32/18151_2.png) [@iHany](https://discourse.julialang.org/u/iHany)\
**Post date:** [December 14, 2021, 12:58am UTC](https://discourse.julialang.org/t/error-no-applicable-savers-found-for-unknown/60339/2 "2021-12-14T00:58:28Z")

</div>

Thanks a lot 🙂