fix credential snapshot

evidence/mixin_parse.py

@@ -10,7 +10,7 @@ logger = logging.getLogger('django')
 class BuildMix:
     def __init__(self, evidence_json):
         self.json = evidence_json
-        self.uuid = self.json['uuid']
+        self.uuid = self.json.get('uuid')
         self.manufacturer = ""
         self.model = ""
         self.serial_number = ""

evidence/normal_parse.py

@@ -49,6 +49,7 @@ class Build(BuildMix):
         if not self.json.get("credentialSubject"):
             return
 
+        self.uuid = self.json.get("credentialSubject", {}).get("uuid")
         self.json.update(self.json["credentialSubject"])
         if self.json.get("evidence"):
             self.json["data"] = {}

evidence/parse.py

@@ -39,11 +39,12 @@ class Build:
         4) normal snapshot from worbench-script is the most basic and is parsed as normal_parse
         """
         self.evidence = evidence_json.copy()
-        self.uuid = self.evidence['uuid']
+        self.uuid = self.evidence.get('uuid')
         self.user = user
 
         if evidence_json.get("credentialSubject"):
             self.build = normal_parse.Build(evidence_json)
+            self.uuid = evidence_json.get("credentialSubject", {}).get("uuid")
         elif evidence_json.get("software") != "workbench-script":
             self.build = old_parse.Build(evidence_json)
         elif evidence_json.get("data",{}).get("lshw"):