diff --git a/src/Console.php b/src/Console.php
index 57ced58..a76c89b 100644
--- a/src/Console.php
+++ b/src/Console.php
@@ -6,7 +6,7 @@
 use Codeception\Subscriber\Console as SubscriberConsole;
 
 class Console extends SubscriberConsole {
-	public function printFail(FailEvent $event, ?int $eventNumber = null): void {
+	public function printFail(FailEvent $event, ?string $eventNumber = null): void {
 		$method = new \ReflectionMethod(SubscriberConsole::class, 'printFail');
 
 		$args = [$event];
diff --git a/src/GitHubReporter.php b/src/GitHubReporter.php
index 3db5ea3..e2e74a0 100644
--- a/src/GitHubReporter.php
+++ b/src/GitHubReporter.php
@@ -109,7 +109,7 @@ public function after(TestEvent $e) {
 		$this->standardReporter->endTest($e);
 	}
 
-	public function printFailed(FailEvent $e, int $eventNumber): void {
+	public function printFailed(FailEvent $e, ?string $eventNumber=null): void {
 		$failedTest = $e->getTest();
 		$fail = $e->getFail();
 
@@ -160,7 +160,7 @@ private function getReports(TestInterface $failedTest) {
 		}
 	}
 
-	private function getTestSignature(TestInterface $test): string {
+	private function getTestSignature($test): string {
 		if ($test instanceof Descriptive) {
 			return Descriptor::getTestSignature($test);
 		}
@@ -168,7 +168,7 @@ private function getTestSignature(TestInterface $test): string {
 		return method_exists($test, 'toString') ? $test->toString() : get_class($test);
 	}
 
-	private function getTestAsString(TestInterface $test): string {
+	private function getTestAsString($test): string {
 		if ($test instanceof Descriptive) {
 			return Descriptor::getTestAsString($test);
 		}
@@ -176,7 +176,7 @@ private function getTestAsString(TestInterface $test): string {
 		return method_exists($test, 'toString') ? $test->toString() : get_class($test);
 	}
 
-	private function getTestFullName(TestInterface $test): string {
+	private function getTestFullName($test): string {
 		if ($test instanceof Descriptive || $test instanceof Plain) {
 			return Descriptor::getTestFullName($test);
 		}
diff --git a/src/StackTrace.php b/src/StackTrace.php
index dfda6cb..83c4940 100644
--- a/src/StackTrace.php
+++ b/src/StackTrace.php
@@ -12,7 +12,7 @@ public function getExceptionTrace($e) {
 			return;
 		}
 
-		$trace = \PHPUnit\Util\Filter::getFilteredStacktrace($e);
+		$trace = explode("\n", \PHPUnit\Util\Filter::getFilteredStacktrace($e));
 
 		$i = 0;
 		foreach ($trace as $step) {