fix: unserializable objects in HTTP-responses

src/API/StreetController.cs

@@ -17,7 +17,7 @@ public class StreetController : ControllerBase
     public async Task<IActionResult> CreateStreet([FromBody] CreateStreetDTO dto)
     {
         if (dto == null)
-            return BadRequest("Invalid request body.");
+            return BadRequest();
 
         try
         {
@@ -28,9 +28,9 @@ public class StreetController : ControllerBase
 
             return Created();
         }
-        catch (InvalidOperationException ex)
+        catch
         {
-            return Conflict(ex);
+            return Conflict();
         }
     }
 
@@ -43,9 +43,9 @@ public class StreetController : ControllerBase
             var street = await StreetService.GetStreetAsync(streetname);
             return Ok(street);
         }
-        catch (KeyNotFoundException ex)
+        catch
         {
-            return NotFound(ex);
+            return NotFound();
         }
     }
 
@@ -55,7 +55,7 @@ public class StreetController : ControllerBase
     {
         var deleted = await StreetService.DeleteStreetAsync(streetname);
         if (!deleted)
-            return NotFound($"Street '{streetname}' not found.");
+            return NotFound();
 
         return NoContent();
     }
@@ -65,24 +65,24 @@ public class StreetController : ControllerBase
     public async Task<IActionResult> AddPoint(string streetname, [FromBody] AddPointDTO dto)
     {
         if (dto == null)
-            return BadRequest("Invalid request body.");
+            return BadRequest();
 
         try
         {
             await StreetService.AddPointAsync(streetname, StreetService.ToGeometryPoint(dto.Point), dto.usePostGIS);
             return Ok();
         }
-        catch (KeyNotFoundException ex)
+        catch (KeyNotFoundException)
         {
-            return NotFound(ex);
+            return NotFound();
         }
-        catch (ArgumentException ex)
+        catch (ArgumentException)
         {
-            return BadRequest(ex);
+            return BadRequest();
         }
         catch
         {
-            return Conflict("Concurrency conflict. Please retry your request.");
+            return Conflict();
         }
     }
 }