Fixing PMD and pages

src/main/docs/requirements-docs.txt

 # docs
-Sphinx==3.2.1
-sphinx-rtd-theme==0.5.0
+Sphinx==7.1.2
+sphinx-rtd-theme==2.0.0

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

@@ -148,7 +148,10 @@ public class GitlabService {
 
         RepositoryFile file;
         try (GitLabApi gitLabApi = gitLabRepository.getGitLabApi(tokenProvider.getGitLabAccessInfo());) {
-            if (exercise.getFile().getCommit_id() != null) {
+            if (exercise.getFile().getCommit_id() == null) {
+                log.warn("commit_id must not be null for {}", exerciseId);
+                return null;
+            } else {
                 file =
                     gitLabApi
                         .getRepositoryFileApi()
@@ -158,9 +161,6 @@ public class GitlabService {
                             exercise.getFile().getCommit_id()
                         );
                 return new ByteArrayInputStream(file.getDecodedContentAsBytes());
-            } else {
-                log.warn("commit_id must not be null for {}", exerciseId);
-                return null;
             }
         } catch (GitLabApiException e) {
             log.warn(