# Synthetic Monitoring
**URL:** https://discuss.elastic.co/t/synthetic-monitoring/257834
**Category:** Synthetics
**Tags:** elastic-stack-monitoring
**Created:** [December 7, 2020, 10:53am UTC](https://discuss.elastic.co/t/synthetic-monitoring/257834 "2020-12-07T10:53:20Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@inhinyera16](https://discuss.elastic.co/u/inhinyera16)
#### Post date: [December 7, 2020, 10:53am UTC](https://discuss.elastic.co/t/synthetic-monitoring/257834/1 "2020-12-07T10:53:20Z")
Hi, im having a problem when validating the heartbeat.docker.yml file.
It's failing on inline script thus the docker container did not continue.
Help?
---
### Author:  [@weltenwort](https://discuss.elastic.co/u/weltenwort)
#### Post date: [December 7, 2020, 11:04am UTC](https://discuss.elastic.co/t/synthetic-monitoring/257834/2 "2020-12-07T11:04:17Z")
Hi @inhinyera16,
can you provide the log output that shows the failure?
---
### Author:  [@inhinyera16](https://discuss.elastic.co/u/inhinyera16)
#### Post date: [December 7, 2020, 11:24am UTC](https://discuss.elastic.co/t/synthetic-monitoring/257834/3 "2020-12-07T11:24:00Z")
> [@weltenwort](#):
>
> g out
I tried testing the predefine inline code using below command
```
cat examples/inline/short.js | npx @elastic/synthetics --inline
```
then i got this error, looks like the installation of npm. Any reference on how to setup npm/npx?
---
### Author:  [@weltenwort](https://discuss.elastic.co/u/weltenwort)
#### Post date: [December 7, 2020, 12:08pm UTC](https://discuss.elastic.co/t/synthetic-monitoring/257834/4 "2020-12-07T12:08:39Z")
Thank you for providing the error message. This looks like a problem with the dependencies. Could you go a bit more into detail about how you set up the environment up to that point? Which installation steps did you take?
---
### Author:  [@Andrew\_Cholakian1](https://discuss.elastic.co/u/Andrew_Cholakian1)
#### Post date: [December 7, 2020, 4:56pm UTC](https://discuss.elastic.co/t/synthetic-monitoring/257834/5 "2020-12-07T16:56:08Z")
To add to @weltenwort's reply, you might try `npm remove @elastic/synthetics` followed by `npm install @elastic/synthetics` to see if that helps or produces a useful error message.
---
### Author:  [@inhinyera16](https://discuss.elastic.co/u/inhinyera16)
#### Post date: [December 7, 2020, 6:40pm UTC](https://discuss.elastic.co/t/synthetic-monitoring/257834/6 "2020-12-07T18:40:04Z")
i followed the quickstart installation [here](https://www.elastic.co/guide/en/observability/current/synthetics-quickstart.html).
cloned the repository in my local, then update only the heartbeat.docker.yml and keep the original run.sh script
For yaml,
I am trying to run the default config for synthetic\_suites only
```
heartbeat.synthetic_suites:
- name: Todos
path: "/opt/elastic-synthetics/examples/inline"
schedule: "@every 1m"
```
I tried to run initially but got failed due to npm/npx dependencies.
so i installed npn using yum install npm
then npm install -g npx
it throws this error, see, even if i remove/install elastic/synthetics as per @Andrew_Cholakian1 i keep having this kind of error
What do i missed?
---
### Author:  [@Andrew\_Cholakian1](https://discuss.elastic.co/u/Andrew_Cholakian1)
#### Post date: [December 7, 2020, 11:44pm UTC](https://discuss.elastic.co/t/synthetic-monitoring/257834/7 "2020-12-07T23:44:00Z")
I think the issue comes from being in the wrong directory while running `npm @elastic/synthetics`.
One confusing thing here is that our examples are in the same directory as our source code. You really want to be in the `examples/todos` directory when running these commands. Running them from the root of the project creates issues because the root of the project itself is the `@elastic/synthetics` package, changing directory to the `examples/todos` directory breaks out of that since it has its own `package.json` from NPM.
I've created this patch to our docs to make things more clear if that helps: [https://github.com/elastic/observability-docs/pull/289](https://github.com/elastic/observability-docs/pull/289)
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [December 31, 2020, 11:44pm UTC](https://discuss.elastic.co/t/synthetic-monitoring/257834/8 "2020-12-31T23:44:05Z")
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