Question: I'm trying to extract data between two quotes using the Google Sheets REGEXEXTRACT function.

The regex works perfect:

```
(?<=actor_email":")(.*?)(?=")

```

Data in the cell is:

```
{"account_name":"Test","actor_email":"test@test.com","user_email":"anyone@test.com"}

```

However, placing it within the Google Sheet gives an error.

Been trying a number of combinations with no luck.

Tried using: `(?<=actor_email""":""")(.*?)(?=""")`

The output should be: `test@test.com`

Answer: 
Restarting the "Azure Pipelines Agent (MyCompanyName.MyMachineName)" service on the build server solved this for me.
This is because you have committed your `bin` folder to source control. `bin` and `obj` folders should **never** be committed to source control. Remove it and ensure it is never re-added by making an appropriate `.tfignore` or `.gitignore` depending on whether you are using Git or TFVC for source control.