# Datomic-pro-0.9.5561.62 - repl error

**URL:** <https://forum.datomic.com/t/datomic-pro-0-9-5561-62-repl-error/324>\
**Category:** Troubleshooting\
**Created:** [February 9, 2018, 2:58pm UTC](https://forum.datomic.com/t/datomic-pro-0-9-5561-62-repl-error/324 "2018-02-09T14:58:13Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![ranjanprakash](https://avatars.discourse-cdn.com/v4/letter/r/e495f1/32.png) [@ranjanprakash](https://forum.datomic.com/u/ranjanprakash)\
**Post date:** [February 9, 2018, 2:58pm UTC](https://forum.datomic.com/t/datomic-pro-0-9-5561-62-repl-error/324/1 "2018-02-09T14:58:14Z")

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D:\datomic-pro-0.9.5561.62\>bin\repl  
Clojure 1.9.0-alpha15  
user=\> (require '[datomic.ap :as d])  
FileNotFoundException Could not locate datomic/ap\_\_init.class or datomic/ap.clj on classpath. clojure.lang.RT.load (RT.java:458)  
user=\>

It had worked earlier just fine. I searched datomic jars and this class is not there anywhere. I did not make any changes under datomic directory.  
How come it worked before? How to fix it now?  
Can anyone help?

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**Author:** ![marshall](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.datomic.com/marshall/32/48_2.png) [@marshall](https://forum.datomic.com/u/marshall)\
**Post date:** [February 9, 2018, 3:08pm UTC](https://forum.datomic.com/t/datomic-pro-0-9-5561-62-repl-error/324/2 "2018-02-09T15:08:21Z")

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The class name should be `datomic.api`, not .ap.

-Marshall

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**Author:** ![dustingetz](https://sea2.discourse-cdn.com/flex016/user_avatar/forum.datomic.com/dustingetz/32/56_2.png) [@dustingetz](https://forum.datomic.com/u/dustingetz)\
**Post date:** [February 9, 2018, 3:16pm UTC](https://forum.datomic.com/t/datomic-pro-0-9-5561-62-repl-error/324/3 "2018-02-09T15:16:45Z")

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datomic.api not datomic.ap 🙂

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**Author:** ![ranjanprakash](https://avatars.discourse-cdn.com/v4/letter/r/e495f1/32.png) [@ranjanprakash](https://forum.datomic.com/u/ranjanprakash)\
**Post date:** [February 9, 2018, 6:46pm UTC](https://forum.datomic.com/t/datomic-pro-0-9-5561-62-repl-error/324/4 "2018-02-09T18:46:15Z")

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yes. thanks!