# Strange error after server reboot

**URL:** <https://discourse.crowdsec.net/t/strange-error-after-server-reboot/1210>\
**Category:** crowdsec\
**Created:** [March 22, 2023, 12:52pm UTC](https://discourse.crowdsec.net/t/strange-error-after-server-reboot/1210 "2023-03-22T12:52:53Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![wojtekxtx](https://dub1.discourse-cdn.com/flex013/user_avatar/discourse.crowdsec.net/wojtekxtx/32/458_2.png) [@wojtekxtx](https://discourse.crowdsec.net/u/wojtekxtx)\
**Post date:** [March 22, 2023, 12:52pm UTC](https://discourse.crowdsec.net/t/strange-error-after-server-reboot/1210/1 "2023-03-22T12:52:53Z")

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I got  
`FATA[22-03-2023 13:48:55] Unable to list alerts : performing request: Get "http://127.0.0.1:8080/v1/alerts?include_capi=false&limit=50": http code 404, invalid body: invalid character '<' looking for beginning of value`

System is

 ![Zrzut ekranu 2023-03-22 o 13.52.34](https://europe1.discourse-cdn.com/flex013/uploads/crowdsec/original/1X/223b5bea543c854f4325ae9b49a584dbb111e7b4.png)

Any clues?

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<div class="post-metadata">

**Author:** ![iiAmLoz](https://dub1.discourse-cdn.com/flex013/user_avatar/discourse.crowdsec.net/iiamloz/32/386_2.png) [@iiAmLoz](https://discourse.crowdsec.net/u/iiAmLoz)\
**Post date:** [March 28, 2023, 8:29am UTC](https://discourse.crowdsec.net/t/strange-error-after-server-reboot/1210/2 "2023-03-28T08:29:40Z")

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It seems that another service may already be using port 8080 (default crowdsec installation port) if so you can alter the configuration to use a different port. You can update `/etc/crowdsec/config.yaml` also you must update `/etc/crowdsec/local_api_credentials.yaml` to the same port.