Trying to debug but sourcemaps fail to load.

```
DEBUG|014.337|DebugConnection: Received response/event {"from":"server1.conn2.child1/context19","type":"newSource","source":{"actor":"server1.conn2.child1/source1312","url":"http://localhost:51304/dial/app.js?build=","isBlackBoxed":false,"sourceMapURL":"app.js.map","introductionUrl":null,"introductionType":"scriptElement"}}
DEBUG|014.337|ThreadActorProxy: New source http://localhost:51304/dial/app.js?build= on thread server1.conn2.child1/context19
DEBUG|014.337|SourceMappingThreadActorProxy: Trying to sourcemap {"actor":"server1.conn2.child1/source1312","url":"http://localhost:51304/dial/app.js?build=","isBlackBoxed":false,"sourceMapURL":"app.js.map","introductionUrl":null,"introductionType":"scriptElement"}
DEBUG|014.355|SourceMappingThreadActorProxy: Received sourcemap
WARN |014.355|SourceMappingThreadActorProxy: Failed fetching sourcemap from http://localhost:51304/dial/app.js.map - giving up
DEBUG|014.356|PathConversion: Converted url http://localhost:51304/dial/app.js?build= to path J:\ctaf\server\Modules\Dialysis\app.js
DEBUG|014.356|SkipFilesManager: skipFile is not set for J:\ctaf\server\Modules\Dialysis\app.js
```

and http://localhost:51304/dial/app.js.map works fine in browser:
```{"version":3,"file":"app.js","sourceRoot":"","sources":["app.ts"],"names":[],"mappings":"AAAA,oEAAoE;AACpE,uEAAuE;AACvE,wEAAwE;AACxE,8DAA8D;A``` ...

Beginne damit, den protokollierten Fehler für http://localhost:51304/dial/app.js.map zu reproduzieren, und vergleiche den Sourcemap-Abruf des Adapters mit derselben URL in einem Browser. Verwende die DEBUG- und WARN-Zeilen, um nachzuverfolgen, wo das Laden abweicht; fertig ist die Aufgabe, wenn der Adapter die Map akzeptiert und app.js wieder zu app.ts auflöst, ohne die Fetch-Warnung.

Vom Indexierungsmodell aus dem Issue-Text verfasst.