Don't allow transitions from ready_to_submit -> error.

edx_proctoring/__init__.py

@@ -5,6 +5,6 @@
 from __future__ import absolute_import
 
 # Be sure to update the version number in edx_proctoring/package.json
-__version__ = '2.2.7'
+__version__ = '2.2.8'
 
 default_app_config = 'edx_proctoring.apps.EdxProctoringConfig'  # pylint: disable=invalid-name

edx_proctoring/static/proctoring/js/views/proctored_exam_view.js

@@ -159,9 +159,16 @@ edx = edx || {};
             var pingInterval = self.model.get('ping_interval');
             self.timerTick += 1;
             self.secondsLeft -= 1;
+
+            // AED 2020-02-21:
+            // If the learner is in a state where they've finished the exam
+            // and the attempt can be submitted (i.e. they are "ready_to_submit"),
+            // don't ping the proctoring app (which action could move
+            // the attempt into an error state).
             if (
                 self.timerTick % pingInterval === pingInterval / 2 &&
-                edx.courseware.proctored_exam.configuredWorkerURL
+                edx.courseware.proctored_exam.configuredWorkerURL &&
+                this.model.get('attempt_status') !== 'ready_to_submit'
             ) {
                 edx.courseware.proctored_exam.pingApplication(pingInterval)
                     .catch(self.endExamForFailureState.bind(self));

package.json

@@ -2,7 +2,7 @@
   "name": "@edx/edx-proctoring",
   "//": "Be sure to update the version number in edx_proctoring/__init__.py",
   "//": "Note that the version format is slightly different than that of the Python version when using prereleases.",
-  "version": "2.2.7",
+  "version": "2.2.8",
   "main": "edx_proctoring/static/index.js",
   "repository": {
     "type": "git",