ProxyScriptingJsFuncHelper CreateJsObjectLiteral missing comma at end of string (when multiple parameters)

[FrancoisKr]

ABP V4
MVC
EF Core

In case of multiple header parameters in a controller, the service proxy script generator fails.

public async Task ActionExampleAsync([FromHeader] string mystr1, [FromHeader] string mystr2, [FromBody] List<MinimizedList> minimizedList)

JS error: ServiceProxyScript:517 Uncaught SyntaxError: Unexpected string

Due to missing comma:
headers: {
'mystr1': mystr1
'mystr2': mystr2
},