Merge pull request #7713 from DIRACGridBot/cherry-pick-2-3012cd52b-in…

…tegration

[sweep:integration] fix: AREX submission issue

src/DIRAC/Resources/Computing/AREXComputingElement.py

@@ -521,6 +521,9 @@ def _getArcJobID(self, executableFile, inputs, outputs, delegation):
         response = result["Value"]
 
         responseJob = response.json()["job"]
+        if isinstance(responseJob, list):
+            responseJob = responseJob[0]
+
         if responseJob["status-code"] > "400":
             self.log.warn(
                 "Failed to submit job",