Unable to parse JSON file in (JSON variable substitution)

[etbuilder]

The task will fail with error ##[error]Error: Unable to parse JSON file: PATH . Error: SyntaxError: Unexpected token / in JSON at position 63

We resolved the issue by removing comments from the JSON file any // was removed to fix the issue, the task should remove any comments before parsing.

[bryanmacfarlane]

Which task? This issue has a few characters from a log with no context.

[etbuilder]

Oh sorry, here is detais.

Task Deploy Azure App Service v3.0*

When using File Transforms & Variable Substitution Options --> JSON variable substitution with a json file that contains any inline comments (ie //bla bla bla)

The task will fail with ##[error]Error: Unable to parse JSON file: PATH . Error: SyntaxError: Unexpected token / in JSON at position 63

[elvirdolic]

We have the same issue with a comment in json file

[vincent1173]

@etharreef , @elvirdolic thanks for your feedback.
Currently the fix is in progress and update you once it's completed.

[ericbrunner]

When will that work in VSTS ?

[vincent1173]

@ericbrunner , we have the story in our backlog and will be taken based on the priority.
Will be updating the thread once the fix is deployed.

[shibinchandra]

is the fix implemented ?

[aleccaputo]

@shibinchandra it is not fixed. We just ran into this today.

[SunnyOswal]

not fixed :(

[rswe]

Getting same issue today e.g. // style comments break VSTS Build (using Task Azure Resource Group Deployment, rather than Appservice - please comment if I should raise a new separate incident?)
The ARM templates are fairly unreadable for others if no comments are possible so will hold off using VSTS build pipeline for now:

2018-01-07T22:13:06.4942880Z Resource Group created successfully.
2018-01-07T22:13:06.4946213Z Creating deployment parameters.
2018-01-07T22:13:06.5091189Z The detected encoding for file 'd:\a\1\s\mainTemplate.json' is 'utf-8'
2018-01-07T22:13:06.5365371Z ##[error]Error: Ensure the Template file ( 'd:\a\1\s\mainTemplate.json' ) is valid. Task failed while parsing with following error: Unexpected token / in JSON at position 49230

[vincent1173]

@rswe , please open a separate thread for this issue.

[sachinma]

@rswe can you specify the version of the Azure Resource Group Deployment task where you are seeing this behavior?

[rswe]

@sachinma @vincentdass Azure Resource Group Deployment task version 2.*
Raised in #6158

[vincent1173]

The Issue is resolved and the fix will be available in upcoming deployment.

[Talegen]

Just ran into this on VSTS as of 3/30/2018. I had a comment in my appsettings.json. removed and now it works.

offending comment was a line that was removed from appsettings.json
...
// [ some config stuff ]
...

2018-03-30T17:40:37.7647836Z ##[section]Starting: IIS Web App Deploy
2018-03-30T17:40:37.7647836Z ==============================================================================
2018-03-30T17:40:37.7647836Z Task : IIS Web App Deploy
2018-03-30T17:40:37.7647836Z Description : Deploy a Website or Web Application using WebDeploy
2018-03-30T17:40:37.7647836Z Version : 0.0.34
2018-03-30T17:40:37.7647836Z Author : Microsoft Corporation
2018-03-30T17:40:37.7647836Z Help : More Information
2018-03-30T17:40:37.7647836Z ==============================================================================
2018-03-30T17:40:39.8585344Z XML variable substitution applied successfully.
2018-03-30T17:40:39.8897824Z ##[error]Error: Unable to parse JSON file: C:...\appsettings.json. Error: SyntaxError: Unexpected token ] in JSON at position 1448
2018-03-30T17:40:39.9054101Z ##[section]Finishing: IIS Web App Deploy

[ongun23]

Having the same issiue.