diff --git a/privacy/classes/local/request/contextlist_base.php b/privacy/classes/local/request/contextlist_base.php
index 71e601a6eff..41dc87e1e0d 100644
--- a/privacy/classes/local/request/contextlist_base.php
+++ b/privacy/classes/local/request/contextlist_base.php
@@ -79,12 +79,20 @@ abstract class contextlist_base implements
      * Get the complete list of context objects that relate to this
      * request.
      *
-     * @return  \contect[]
+     * @return  \context[]
      */
     public function get_contexts() : array {
         $contexts = [];
         foreach ($this->contextids as $contextid) {
-            $contexts[] = \context::instance_by_id($contextid);
+            // It is possible that this context has been deleted and we now have subsequent calls being made with this
+            // contextlist. Exceptions here will stop the further processing of this component and that is why we are
+            // doing a try catch.
+            try {
+                $contexts[] = \context::instance_by_id($contextid);
+            } catch (\Exception $e) {
+                // Remove this context.
+                unset($this->contextids[$this->iteratorposition]);
+            }
         }
 
         return $contexts;
@@ -114,7 +122,25 @@ abstract class contextlist_base implements
      * @return  \context
      */
     public function current() {
-        return \context::instance_by_id($this->contextids[$this->iteratorposition]);
+        // It is possible that this context has been deleted and we now have subsequent calls being made with this
+        // contextlist. Exceptions here will stop the further processing of this component and that is why we are
+        // doing a try catch.
+        try {
+            $context = \context::instance_by_id($this->contextids[$this->iteratorposition]);
+        } catch (\Exception $e) {
+            // Remove this context.
+            unset($this->contextids[$this->iteratorposition]);
+            // Check to see if there are any more contexts left.
+            if ($this->count()) {
+                // Move the pointer to the next record and try again.
+                $this->next();
+                $context = $this->current();
+            } else {
+                // There are no more context ids left.
+                return;
+            }
+        }
+        return $context;
     }
 
     /**
diff --git a/privacy/tests/contextlist_base_test.php b/privacy/tests/contextlist_base_test.php
index e60dcbcb406..0dc4f793834 100644
--- a/privacy/tests/contextlist_base_test.php
+++ b/privacy/tests/contextlist_base_test.php
@@ -141,6 +141,130 @@ class contextlist_base_test extends advanced_testcase {
             $this->assertNotFalse(array_search($context, $contexts));
         }
     }
+
+    /**
+     * Test that deleting a context results in current returning nothing.
+     */
+    public function test_current_context_one_context() {
+        global $DB;
+
+        $this->resetAfterTest();
+
+        $data = (object) [
+            'contextlevel' => CONTEXT_BLOCK,
+            'instanceid' => 45,
+            'path' => '1/5/67/107',
+            'depth' => 4
+        ];
+
+        $contextid = $DB->insert_record('context', $data);
+
+        $contextbase = new test_contextlist_base();
+        $contextbase->set_contextids([$contextid]);
+        $this->assertCount(1, $contextbase);
+        $currentcontext = $contextbase->current();
+        $this->assertEquals($contextid, $currentcontext->id);
+        $DB->delete_records('context', ['id' => $contextid]);
+        context_helper::reset_caches();
+        $this->assertEmpty($contextbase->current());
+    }
+
+    /**
+     * Test that deleting a context results in the next record being returned.
+     */
+    public function test_current_context_two_contexts() {
+        global $DB;
+
+        $this->resetAfterTest();
+
+        $data = (object) [
+            'contextlevel' => CONTEXT_BLOCK,
+            'instanceid' => 45,
+            'path' => '1/5/67/107',
+            'depth' => 4
+        ];
+
+        $contextid1 = $DB->insert_record('context', $data);
+
+        $data = (object) [
+            'contextlevel' => CONTEXT_BLOCK,
+            'instanceid' => 47,
+            'path' => '1/5/54/213',
+            'depth' => 4
+        ];
+
+        $contextid2 = $DB->insert_record('context', $data);
+
+        $contextbase = new test_contextlist_base();
+        $contextbase->set_contextids([$contextid1, $contextid2]);
+        $this->assertCount(2, $contextbase);
+        $DB->delete_records('context', ['id' => $contextid1]);
+        context_helper::reset_caches();
+        // Current should return context 2.
+        $this->assertEquals($contextid2, $contextbase->current()->id);
+    }
+
+    /**
+     * Test that if there are no non-deleted contexts that nothing is returned.
+     */
+    public function test_get_contexts_all_deleted() {
+        global $DB;
+
+        $this->resetAfterTest();
+
+        $data = (object) [
+            'contextlevel' => CONTEXT_BLOCK,
+            'instanceid' => 45,
+            'path' => '1/5/67/107',
+            'depth' => 4
+        ];
+
+        $contextid = $DB->insert_record('context', $data);
+
+        $contextbase = new test_contextlist_base();
+        $contextbase->set_contextids([$contextid]);
+        $this->assertCount(1, $contextbase);
+        $DB->delete_records('context', ['id' => $contextid]);
+        context_helper::reset_caches();
+        $this->assertEmpty($contextbase->get_contexts());
+    }
+
+    /**
+     * Test that get_contexts() returns only active contexts.
+     */
+    public function test_get_contexts_one_deleted() {
+        global $DB;
+
+        $this->resetAfterTest();
+
+        $data = (object) [
+            'contextlevel' => CONTEXT_BLOCK,
+            'instanceid' => 45,
+            'path' => '1/5/67/107',
+            'depth' => 4
+        ];
+
+        $contextid1 = $DB->insert_record('context', $data);
+
+        $data = (object) [
+            'contextlevel' => CONTEXT_BLOCK,
+            'instanceid' => 47,
+            'path' => '1/5/54/213',
+            'depth' => 4
+        ];
+
+        $contextid2 = $DB->insert_record('context', $data);
+
+        $contextbase = new test_contextlist_base();
+        $contextbase->set_contextids([$contextid1, $contextid2]);
+        $this->assertCount(2, $contextbase);
+        $DB->delete_records('context', ['id' => $contextid1]);
+        context_helper::reset_caches();
+        $contexts = $contextbase->get_contexts();
+        $this->assertCount(1, $contexts);
+        $context = array_shift($contexts);
+        $this->assertEquals($contextid2, $context->id);
+    }
 }
 
 /**