diff --git a/lib/Command/AccountCreate.php b/lib/Command/AccountCreate.php
index 12b05e1a..d08aa63f 100644
--- a/lib/Command/AccountCreate.php
+++ b/lib/Command/AccountCreate.php
@@ -75,7 +75,7 @@ class AccountCreate extends Base {
 	/**
 	 * @throws Exception
 	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$userId = $input->getArgument('userId');
 
 		if (($handle = $input->getOption('handle')) === null) {
@@ -87,5 +87,7 @@ class AccountCreate extends Base {
 		}
 
 		$this->accountService->createActor($userId, $handle);
+
+		return 0;
 	}
 }
diff --git a/lib/Command/AccountFollowing.php b/lib/Command/AccountFollowing.php
index 66fbb4cf..84563572 100644
--- a/lib/Command/AccountFollowing.php
+++ b/lib/Command/AccountFollowing.php
@@ -76,7 +76,7 @@ class AccountFollowing extends Base {
 	/**
 	 * @throws Exception
 	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$userId = $input->getArgument('userId');
 		$account = $input->getArgument('account');
 
@@ -91,5 +91,7 @@ class AccountFollowing extends Base {
 		} else {
 			$this->followService->followAccount($actor, $account);
 		}
+
+		return 0;
 	}
 }
diff --git a/lib/Command/CacheRefresh.php b/lib/Command/CacheRefresh.php
index 2f1e45a4..5d39f373 100644
--- a/lib/Command/CacheRefresh.php
+++ b/lib/Command/CacheRefresh.php
@@ -67,7 +67,7 @@ class CacheRefresh extends Base {
 	/**
 	 * @throws Exception
 	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$result = $this->accountService->blindKeyRotation();
 		$output->writeLn($result . ' key pairs refreshed');
 
@@ -85,5 +85,7 @@ class CacheRefresh extends Base {
 
 		$result = $this->hashtagService->manageHashtags();
 		$output->writeLn($result . ' hashtags updated');
+
+		return 0;
 	}
 }
diff --git a/lib/Command/CheckInstall.php b/lib/Command/CheckInstall.php
index e0a3712d..d3396455 100644
--- a/lib/Command/CheckInstall.php
+++ b/lib/Command/CheckInstall.php
@@ -31,7 +31,6 @@ declare(strict_types=1);
 
 namespace OCA\Social\Command;
 
-use OCA\Social\Tools\Traits\TArrayTools;
 use Exception;
 use OC\Core\Command\Base;
 use OCA\Social\Db\StreamDestRequest;
@@ -42,6 +41,7 @@ use OCA\Social\Service\CheckService;
 use OCA\Social\Service\ConfigService;
 use OCA\Social\Service\MiscService;
 use OCA\Social\Service\PushService;
+use OCA\Social\Tools\Traits\TArrayTools;
 use OCP\IUserManager;
 use Symfony\Component\Console\Helper\ProgressBar;
 use Symfony\Component\Console\Input\InputInterface;
@@ -97,9 +97,9 @@ class CheckInstall extends Base {
 	/**
 	 * @throws Exception
 	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		if ($this->askRegenerateIndex($input, $output)) {
-			return;
+			return 0;
 		}
 
 //		if ($this->checkPushApp($input, $output)) {
@@ -114,6 +114,8 @@ class CheckInstall extends Base {
 		$output->writeln('');
 		$output->writeln('- Your current configuration: ');
 		$output->writeln(json_encode($this->configService->getConfig(), JSON_PRETTY_PRINT));
+
+		return 0;
 	}
 
 	/**
diff --git a/lib/Command/Fediverse.php b/lib/Command/Fediverse.php
index f4c11956..e2801bbd 100644
--- a/lib/Command/Fediverse.php
+++ b/lib/Command/Fediverse.php
@@ -69,11 +69,11 @@ class Fediverse extends Base {
 	/**
 	 * @throws Exception
 	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$this->output = $output;
 
 		if ($this->typeAccess($input->getOption('type'))) {
-			return;
+			return 0;
 		}
 
 		$this->output->writeln(
@@ -108,6 +108,8 @@ class Fediverse extends Base {
 			default:
 				throw new Exception('specify action: add, remove, list, reset');
 		}
+
+		return 0;
 	}
 
 	/**
diff --git a/lib/Command/MigrateAlpha3.php b/lib/Command/MigrateAlpha3.php
index e59e9a99..05774920 100644
--- a/lib/Command/MigrateAlpha3.php
+++ b/lib/Command/MigrateAlpha3.php
@@ -130,7 +130,7 @@ class MigrateAlpha3 extends Base {
 	/**
 	 * @throws Exception
 	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$tables = $this->checkTables();
 
 		if ($input->getOption('force-remove-old-tables')) {
@@ -138,13 +138,13 @@ class MigrateAlpha3 extends Base {
 				$this->dropTable($table);
 			}
 
-			return;
+			return 0;
 		}
 
 		if (empty($tables)) {
 			$output->writeln('Nothing to migrate.');
 
-			return;
+			return 0;
 		}
 
 		$defTables = '';
@@ -157,7 +157,7 @@ class MigrateAlpha3 extends Base {
 		);
 
 		if (!$this->confirmExecute($input, $output)) {
-			return;
+			return 0;
 		}
 
 		$this->done = [];
@@ -166,6 +166,8 @@ class MigrateAlpha3 extends Base {
 		if ($input->getOption('remove-migrated-tables')) {
 			$this->dropDeprecatedTables($input, $output);
 		}
+
+		return 0;
 	}
 
 
diff --git a/lib/Command/NoteBoost.php b/lib/Command/NoteBoost.php
index 91c83983..67a5c0cc 100644
--- a/lib/Command/NoteBoost.php
+++ b/lib/Command/NoteBoost.php
@@ -85,7 +85,7 @@ class NoteBoost extends Base {
 	 *
 	 * @throws Exception
 	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$userId = $input->getArgument('user_id');
 		$noteId = $input->getArgument('note_id');
 
@@ -101,5 +101,7 @@ class NoteBoost extends Base {
 
 		echo 'object: ' . json_encode($activity, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n";
 		echo 'token: ' . $token . "\n";
+
+		return 0;
 	}
 }
diff --git a/lib/Command/NoteCreate.php b/lib/Command/NoteCreate.php
index b0e990b9..d5ea7827 100644
--- a/lib/Command/NoteCreate.php
+++ b/lib/Command/NoteCreate.php
@@ -121,7 +121,7 @@ class NoteCreate extends Base {
 	 *
 	 * @throws Exception
 	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$userId = $input->getArgument('userid');
 		$content = $input->getArgument('content');
 		$to = $input->getOption('to');
@@ -142,5 +142,7 @@ class NoteCreate extends Base {
 
 		echo 'object: ' . json_encode($activity, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n";
 		echo 'token: ' . $token . "\n";
+
+		return 0;
 	}
 }
diff --git a/lib/Command/NoteLike.php b/lib/Command/NoteLike.php
index 63364298..6d01fe09 100644
--- a/lib/Command/NoteLike.php
+++ b/lib/Command/NoteLike.php
@@ -97,7 +97,7 @@ class NoteLike extends Base {
 	 *
 	 * @throws Exception
 	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$userId = $input->getArgument('user_id');
 		$noteId = $input->getArgument('note_id');
 
@@ -113,5 +113,7 @@ class NoteLike extends Base {
 
 		echo 'object: ' . json_encode($activity, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n";
 		echo 'token: ' . $token . "\n";
+
+		return 0;
 	}
 }
diff --git a/lib/Command/QueueProcess.php b/lib/Command/QueueProcess.php
index fb9d6180..6e1e51d4 100644
--- a/lib/Command/QueueProcess.php
+++ b/lib/Command/QueueProcess.php
@@ -87,12 +87,13 @@ class QueueProcess extends Base {
 	 * @param InputInterface $input
 	 * @param OutputInterface $output
 	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$output->writeLn('processing requests queue');
 		$this->processRequestQueue($output);
 
 		$output->writeLn('processing stream queue');
 		$this->processStreamQueue($output);
+
 		return 0;
 	}
 
diff --git a/lib/Command/QueueStatus.php b/lib/Command/QueueStatus.php
index 67e256be..2e2bbbc3 100644
--- a/lib/Command/QueueStatus.php
+++ b/lib/Command/QueueStatus.php
@@ -85,7 +85,7 @@ class QueueStatus extends Base {
 	 *
 	 * @throws Exception
 	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$token = $input->getOption('token');
 
 		if ($token === null) {
@@ -97,5 +97,7 @@ class QueueStatus extends Base {
 		foreach ($requests as $request) {
 			$output->writeLn(json_encode($request));
 		}
+
+		return 0;
 	}
 }
diff --git a/lib/Command/Reset.php b/lib/Command/Reset.php
index e01138d5..b96e2307 100644
--- a/lib/Command/Reset.php
+++ b/lib/Command/Reset.php
@@ -91,7 +91,7 @@ class Reset extends Base {
 	 *
 	 * @throws Exception
 	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$helper = $this->getHelper('question');
 		$output->writeln(
 			'<error>Beware, this operation will delete all content from the Social App.</error>'
@@ -102,7 +102,7 @@ class Reset extends Base {
 		);
 
 		if (!$helper->ask($input, $output, $question)) {
-			return;
+			return 0;
 		}
 
 		$question = new ConfirmationQuestion(
@@ -110,7 +110,7 @@ class Reset extends Base {
 			'/^(y|Y)/i'
 		);
 		if (!$helper->ask($input, $output, $question)) {
-			return;
+			return 0;
 		}
 
 
@@ -124,7 +124,7 @@ class Reset extends Base {
 				$output->writeln('<error>' . $e->getMessage() . '</error>');
 			}
 
-			return;
+			return 0;
 		}
 
 
@@ -136,7 +136,7 @@ class Reset extends Base {
 		} catch (Exception $e) {
 			$output->writeln('<error>' . $e->getMessage() . '</error>');
 
-			return;
+			return 0;
 		}
 
 		$this->checkService->checkInstallationStatus(true);
@@ -152,13 +152,15 @@ class Reset extends Base {
 		$newCloudAddress = $helper->ask($input, $output, $question);
 
 		if ($newCloudAddress === $cloudAddress) {
-			return;
+			return 0;
 		}
 
 		$this->configService->setCloudUrl($newCloudAddress);
 
 		$output->writeln('');
 		$output->writeln('New address: <info>' . $newCloudAddress . '</info>');
+
+		return 0;
 	}
 
 
diff --git a/lib/Command/StreamDetails.php b/lib/Command/StreamDetails.php
index 94dce92f..a0dab3af 100644
--- a/lib/Command/StreamDetails.php
+++ b/lib/Command/StreamDetails.php
@@ -92,7 +92,7 @@ class StreamDetails extends ExtendedBase {
 	 *
 	 * @throws Exception
 	 */
-	protected function execute(InputInterface $input, OutputInterface $output) {
+	protected function execute(InputInterface $input, OutputInterface $output): int {
 		$output = new ConsoleOutput();
 		$this->output = $output->section();
 
@@ -110,7 +110,7 @@ class StreamDetails extends ExtendedBase {
 		if ($this->asJson) {
 			$this->output->writeln(json_encode($details, JSON_PRETTY_PRINT));
 
-			return;
+			return 0;
 		}
 
 		$this->outputStream($stream);
@@ -133,5 +133,7 @@ class StreamDetails extends ExtendedBase {
 		$this->output->writeln('* <info>Direct</info>: ' . json_encode($direct, JSON_PRETTY_PRINT));
 		$this->output->writeln('* <info>Public</info>: ' . ($details->isPublic() ? 'true' : 'false'));
 		$this->output->writeln('* <info>Federated</info>: ' . ($details->isFederated() ? 'true' : 'false'));
+
+		return 0;
 	}
 }