# Collecting APM Data

**URL:** <https://discuss.elastic.co/t/collecting-apm-data/379960>\
**Category:** Elastic Observability\
**Created:** [July 9, 2025, 5:27pm UTC](https://discuss.elastic.co/t/collecting-apm-data/379960 "2025-07-09T17:27:44Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![AlbertoMunoz](https://avatars.discourse-cdn.com/v4/letter/a/fbc32d/32.png) [@AlbertoMunoz](https://discuss.elastic.co/u/AlbertoMunoz)\
**Post date:** [July 9, 2025, 5:27pm UTC](https://discuss.elastic.co/t/collecting-apm-data/379960/1 "2025-07-09T17:27:44Z")

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Hello does anyknow why I cant see anythong in the APS windows once I did all the stept in the lab, I only can see the last one, the react but I cant see address-finder,java,node js.... I n fact I cant start the spring app in the server due to this issue :

* * *

APPLICATION FAILED TO START

* * *

Description:

The Tomcat connector configured to listen on port 80 failed to start. The port may already be in use or the connector may be misconfigured.

Action:

Verify the connector's configuration, identify and stop any process that's listening on port 80, or configure this application to listen on another port.

Please help