Fix issue where activity is null

src/ActivityLogger.php

@@ -77,8 +77,10 @@ public function by(Model | int | string | null $modelOrId): static
 
     public function causedByAnonymous(): static
     {
-        $this->activity->causer_id = null;
-        $this->activity->causer_type = null;
+        $activity = $this->getActivity();
+
+        $activity->causer_id = null;
+        $activity->causer_type = null;
 
         return $this;
     }
@@ -95,7 +97,7 @@ public function event(string $event): static
 
     public function setEvent(string $event): static
     {
-        $this->activity->event = $event;
+        $this->getActivity()->event = $event;
 
         return $this;
     }
@@ -160,7 +162,7 @@ public function log(string $description): ?ActivityContract
             return null;
         }
 
-        $activity = $this->activity;
+        $activity = $this->getActivity();
 
         $activity->description = $this->replacePlaceholders(
             $activity->description ?? $description,

src/Facades/Activity.php

@@ -36,6 +36,8 @@
  */
 class Activity extends Facade
 {
+    protected static $cached = false;
+
     protected static function getFacadeAccessor(): string
     {
         return PendingActivityLog::class;

tests/ActivityLoggerTest.php

@@ -29,6 +29,26 @@
     expect($this->getLastActivity()->description)->toEqual($this->activityDescription);
 });
 
+it('will return a new instance of PendingActivityLog through the facade', function () {
+    $instance1 = ActivityFacade::log($this->activityDescription);
+    $instance2 = ActivityFacade::log($this->activityDescription);
+
+    expect($instance1)->not->toBe($instance2);
+});
+
+it('can log multiple consecutive activities', function () {
+    ActivityFacade::log($this->activityDescription);
+
+    ActivityFacade::causedByAnonymous()
+        ->event('created')
+        ->log($this->activityDescription);
+
+    expect($this->getLastActivity()->description)->toEqual($this->activityDescription);
+    expect($this->getLastActivity()->event)->toEqual('created');
+    expect($this->getLastActivity()->causer_id)->toBeNull();
+    expect($this->getLastActivity()->causer_type)->toBeNull();
+});
+
 it('will not log an activity when the log is not enabled', function () {
     config(['activitylog.enabled' => false]);