# "Url does not exist" error when installing a pack

**URL:** <https://swi-prolog.discourse.group/t/url-does-not-exist-error-when-installing-a-pack/429>\
**Category:** General\
**Created:** [March 22, 2019, 8:35am UTC](https://swi-prolog.discourse.group/t/url-does-not-exist-error-when-installing-a-pack/429 "2019-03-22T08:35:20Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![JCR](https://avatars.discourse-cdn.com/v4/letter/j/258eb7/32.png) [@JCR](https://swi-prolog.discourse.group/u/JCR)\
**Post date:** [March 22, 2019, 8:35am UTC](https://swi-prolog.discourse.group/t/url-does-not-exist-error-when-installing-a-pack/429/1 "2019-03-22T08:35:20Z")

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Hi!  
When doing `?- pack_install(cplint).` i get the error:  
ERROR: url `‘[http://www.swi-prolog.org/pack/query](http://www.swi-prolog.org/pack/query)’’ does not exist (status(503,first byte timeout))  
I have SWI 7.4.1 on MacOS10.13.6.  
Any solution?  
Thanks!  
/JC

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**Author:** ![jan](https://yyz2.discourse-cdn.com/free1/user_avatar/swi-prolog.discourse.group/jan/32/4_2.png) [@jan](https://swi-prolog.discourse.group/u/jan)\
**Post date:** [March 22, 2019, 8:46am UTC](https://swi-prolog.discourse.group/t/url-does-not-exist-error-when-installing-a-pack/429/2 "2019-03-22T08:46:55Z")

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Seems there is a network or similar issue at the compute center of the university where the backend server is hosted. I guess that will be resolved.

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**Author:** ![JCR](https://avatars.discourse-cdn.com/v4/letter/j/258eb7/32.png) [@JCR](https://swi-prolog.discourse.group/u/JCR)\
**Post date:** [March 22, 2019, 8:57am UTC](https://swi-prolog.discourse.group/t/url-does-not-exist-error-when-installing-a-pack/429/3 "2019-03-22T08:57:55Z")

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OK, thanks!