--- title: "Ruby APM Troubleshooting" slug: "ruby-apm-troubleshooting" description: "Troubleshooting unit test errors? Learn how to disable the profiler using instrument toggle or environment variable STACKIFY_INSTRUMENT=false. Verify supported technologies for APM data." updated: 2020-06-15T14:44:57Z published: 2020-06-15T14:44:58Z canonical: "docs.stackify.com/ruby-apm-troubleshooting" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.stackify.com/llms.txt > Use this file to discover all available pages before exploring further. # Ruby APM Troubleshooting ## Errors on Unit Tests If you are getting errors when running unit tests you can disable the profiler w/ the `instrument` toggle. Add `instrument` toggle to `config/stackify_apm` ``` instrument: false ``` Alternatively, create an environment variable `STACKIFY_INSTRUMENT` with a value of `false`. ## No APM Data - Verify [Supported Technologies](/docs/supported) - Verify that no other profiler is installed in project.