# This URCap requires package with strange name

**URL:** <https://forum.universal-robots.com/t/this-urcap-requires-package-with-strange-name/17253>\
**Category:** URCap Development\
**Created:** [October 26, 2021, 10:17am UTC](https://forum.universal-robots.com/t/this-urcap-requires-package-with-strange-name/17253 "2021-10-26T10:17:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![anon24392374](https://avatars.discourse-cdn.com/v4/letter/a/c2a13f/32.png) [@anon24392374](https://forum.universal-robots.com/u/anon24392374)\
**Post date:** [October 26, 2021, 10:17am UTC](https://forum.universal-robots.com/t/this-urcap-requires-package-with-strange-name/17253/1 "2021-10-26T10:17:51Z")

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Hi

I’m trying to install a URCap requiring several 3rd Party packages. 3rd Party packages were added in POM using

```auto
		<Import-Package>
			com.ur.urcap.api*,
			*;resolution:=optional
		<Import-Package>
		<!-- embed all runtime scope dependencies -->
		<Embed-Dependency>*;scope=compile|runtime</Embed-Dependency>
		<Embed-Transitive>true</Embed-Transitive>
		<_exportcontents>io.reactivex.rxjava3*,org.osgi.framework*,org.reactivestreams*</_exportcontents

```

mvn install finishes successfully. When starting URSim on a Ubuntu Box using Java 8 the following error message is displayed.

```auto
This URCap needs 3rd party dependency which is not available. URCap requires package 'm.SICK.EOAS [195](R 195.6' which is not available.

```

_m.SICK.EOAS_ is the ending of our root package name and the symbolic name of our URCap. Completely it is called _com.SICK.EOAS_. _[195](R 195.6_ is totally unknown to me and cannot be found anywhere in our code base. Looks almost like the ending of a ClassNotFoundException error message thrown and caught somewhere in the BundleWiringImpl$BundleClassLoader. But actually I didn’t find it when debugging the launch of URSim.

Can anybody help me to localize this error? I have no clue how to obey more information on how and where this error occurs.

Best regards

Thomas

---

<div class="post-metadata">

**Author:** ![johannes.volkmann](https://avatars.discourse-cdn.com/v4/letter/j/6de8d8/32.png) [@johannes.volkmann](https://forum.universal-robots.com/u/johannes.volkmann)\
**Post date:** [September 17, 2024, 8:53am UTC](https://forum.universal-robots.com/t/this-urcap-requires-package-with-strange-name/17253/2 "2024-09-17T08:53:54Z")

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Hi, I have the same problem. Were you able to find a solution?  
Best Regards  
Jo

---

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**Author:** ![Florian.Wolff](https://avatars.discourse-cdn.com/v4/letter/f/c67d28/32.png) [@Florian.Wolff](https://forum.universal-robots.com/u/Florian.Wolff)\
**Post date:** [October 15, 2024, 12:42pm UTC](https://forum.universal-robots.com/t/this-urcap-requires-package-with-strange-name/17253/3 "2024-10-15T12:42:03Z")

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Hi Johannes,

could you describe your issues further so we can look into what might be happening at your side?

//Florian