Added check before removing directory

src/main/java/at/ac/uibk/gitsearch/service/GitlabService.java

@@ -223,7 +223,9 @@ public class GitlabService {
             git.commit().setAll(true).setMessage("Importing files").setCommitter(currentUser.getUsername(), currentUser.getEmail()).call();
             git.push().setCredentialsProvider(CredentialsProvider.getDefault()).call();
         } catch (GitLabApiException | GitAPIException e) {
-	        FileUtils.deleteDirectory(git.getRepository().getDirectory().getParentFile());
+	        if (git.getRepository().getDirectory().getParentFile().exists()) {
+                FileUtils.deleteDirectory(git.getRepository().getDirectory().getParentFile());
+            }
 	        log.error("An error occurred during the commit and push of files: {}", e.getMessage());
 	        throw e;
         }