fix(map): avoid error 500 if no structure position

src/tcl/tclStopPoint.controller.ts

-import { Body, Controller, Logger, Post, UseGuards } from '@nestjs/common';
+import { Body, Controller, HttpException, HttpStatus, Logger, Post, UseGuards } from '@nestjs/common';
 import { ApiOperation, ApiResponse, ApiTags } from '@nestjs/swagger';
 import { JwtAuthGuard } from '../auth/guards/jwt-auth.guard';
 import { Roles } from '../users/decorators/roles.decorator';
@@ -37,6 +37,12 @@ export class TclStopPointController {
   })
   @Post('/closest')
   public getClosestStopPoints(@Body() pgisCoord: PgisCoord): Promise<TclStopPoint[]> {
+    if (pgisCoord.coordinates.includes(null)) {
+      throw new HttpException(
+        `Invalid empty coordinate: ${JSON.stringify(pgisCoord.coordinates)}`,
+        HttpStatus.BAD_REQUEST
+      );
+    }
     return this.tclStopPointService.getClosestStopPoints(pgisCoord);
   }
 }