Excuting a query in VSCode

Hi,

how to a execute an query with the vscode plugin?
After reading the existing issues, there should be an "execute" button on top of a graphql file.
This is not the case for me.
Further, the explicit setting

```
{
"vscode-graphql.showExecCodelens": true
}
```
is not recognized.

I'm sure, my configuration file is correct, because autocompletion when writing queries works.
Further I configured the endpoint and set the authorization in the headers.

I'm using the latest, a.k.a v0.44, version of the plugin.