FIX: correct index parsing for ta-errors

frontend/src/main.js

@@ -186,7 +186,7 @@ const store = new Vuex.Store({
                 state.transaction_result = {
                     'type': 'error',
                     'error': e.response.data.exception,
-                    'uuid': state.ta_list[e.response.data.exception.traceback[0].param['wapi.transaction_stmt.index']].uuid
+                    'uuid': state.ta_list[APIUtil.getAPIErrorIndexFromDBException(e.response.data.exception)].uuid
                 }
                 window.localStorage.setItem('transaction_result', JSON.stringify(state.transaction_result))
             }
@@ -216,7 +216,7 @@ const store = new Vuex.Store({
                 state.transaction_result = {
                     'type': 'error',
                     'error': e.response.data.exception,
-                    'uuid': state.ta_list[e.response.data.exception.traceback[0].param['wapi.transaction_stmt.index']].uuid
+                    'uuid': state.ta_list[APIUtil.getAPIErrorIndexFromDBException(e.response.data.exception)].uuid
                 }
                 window.localStorage.setItem('transaction_result', JSON.stringify(state.transaction_result))
             }

frontend/src/util/apiutil.js

@@ -38,5 +38,13 @@ export default {
             res.push(app)
         }
         return res
+    },
+    getAPIErrorIndexFromDBException(e) {
+        for(let t of e.traceback) {
+            if('param' in t && 'wapi.transaction_stmt.index' in t.param) {
+                return t.param['wapi.transaction_stmt.index']
+            }
+        }
+        return -1
     }
 }