Improve memory handling in jobs

app/Jobs/Entity/CreateEntityPdf.php

@@ -218,6 +218,12 @@ class CreateEntityPdf implements ShouldQueue
                 throw new FilePermissionsFailure($e->getMessage());
             }
         }
+        
+        $this->invitation = null;
+        $this->entity = null;
+        $this->company = null;
+        $this->client = null;
+        $this->contact = null;
 
         return $file_path;
     }

app/Jobs/Entity/EmailEntity.php

@@ -128,6 +128,9 @@ class EmailEntity implements ShouldQueue
         $nmo->entity = $this->entity;
 
         (new NinjaMailerJob($nmo))->handle();
+
+        $nmo = null;
+        $this->invitation = null;
     }
 
     private function resolveEntityString() :string

app/Jobs/Mail/NinjaMailerJob.php

@@ -115,6 +115,7 @@ class NinjaMailerJob implements ShouldQueue
 
         //send email
         try {
+
             nlog("trying to send to {$this->nmo->to_user->email} ". now()->toDateTimeString());
             nlog("Using mailer => ". $this->mailer);
 
@@ -128,6 +129,8 @@ class NinjaMailerJob implements ShouldQueue
             LightLogs::create(new EmailSuccess($this->nmo->company->company_key))
                      ->send();
 
+            $this->nmo = null;
+            $this->company = null;
 
         } catch (\Exception | \RuntimeException | \Google\Service\Exception $e) {
             
@@ -381,7 +384,7 @@ class NinjaMailerJob implements ShouldQueue
     private function logMailError($errors, $recipient_object)
     {
 
-        SystemLogger::dispatch(
+        SystemLogger::dispatchSync(
             $errors,
             SystemLog::CATEGORY_MAIL,
             SystemLog::EVENT_MAIL_SEND,
@@ -396,6 +399,9 @@ class NinjaMailerJob implements ShouldQueue
 
         LightLogs::create($job_failure)
                  ->send();
+
+        $job_failure = null;
+
     }
 
     public function failed($exception = null)

app/Jobs/Util/SystemLogger.php

@@ -79,11 +79,22 @@ class SystemLogger implements ShouldQueue
 
         if (! $this->log) {
             nlog('SystemLogger:: no log to store');
-
+            $this->category_id = null;
+            $this->event_id = null;
+            $this->type_id = null;
+            $this->client = null;
+            $this->company = null;
             return;
         }
 
         SystemLog::create($sl);
+
+        $this->log = null;
+        $this->category_id = null;
+        $this->event_id = null;
+        $this->type_id = null;
+        $this->client = null;
+        $this->company = null;
     }
 
     public function failed($e)