Deploy fix

src/main/java/nl/tudelft/tam/controller/TrainingApprovalController.java

@@ -17,9 +17,7 @@
  */
 package nl.tudelft.tam.controller;
 
-import java.io.File;
 import java.io.IOException;
-import java.net.URISyntaxException;
 import java.util.Map;
 
 import nl.tudelft.labracore.api.dto.PersonSummaryDTO;
@@ -30,8 +28,8 @@ import nl.tudelft.tam.service.PersonService;
 import nl.tudelft.tam.service.TrainingApprovalService;
 
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.core.io.InputStreamResource;
 import org.springframework.core.io.Resource;
-import org.springframework.core.io.UrlResource;
 import org.springframework.http.HttpHeaders;
 import org.springframework.http.MediaType;
 import org.springframework.http.ResponseEntity;
@@ -120,20 +118,15 @@ public class TrainingApprovalController {
 
 	@GetMapping("/import/template")
 	@PreAuthorize("@authorisationService.isCoordinatorOfAny()")
-	public ResponseEntity<Resource> downloadTemplateFile() throws IOException, URISyntaxException {
-		File file = new File(
-				this.getClass()
-						.getResource("/static/import_templates/import_training_template.csv")
-						.toURI());
-
-		UrlResource resource = new UrlResource("file:" + file.getPath());
+	public ResponseEntity<Resource> downloadTemplateFile() {
+		Resource resource = new InputStreamResource(
+				getClass().getResourceAsStream("/static/import_templates/import_training_template.csv"));
 
 		return ResponseEntity.ok()
 				.contentType(MediaType.parseMediaType(MediaType.APPLICATION_OCTET_STREAM_VALUE))
 				.header(HttpHeaders.CONTENT_DISPOSITION,
-						"attachment; filename=\"" + resource.getFilename() + "\"")
+						"attachment; filename=import_training_template.csv")
 				.body(resource);
-
 	}
 
 	@PostMapping("import/{programId}/csv")