diff --git a/mailpoet/lib/API/JSON/API.php b/mailpoet/lib/API/JSON/API.php
index 2704f890d5..c829434d9d 100644
--- a/mailpoet/lib/API/JSON/API.php
+++ b/mailpoet/lib/API/JSON/API.php
@@ -281,7 +281,9 @@ class API {
 
   private function logError(Throwable $e): void {
     // logging to the php log
-    error_log((string)$e); // phpcs:ignore Squiz.PHP.DiscouragedFunctions
+    if (function_exists('error_log')) {
+      error_log((string)$e); // phpcs:ignore Squiz.PHP.DiscouragedFunctions
+    }
     // logging to the MailPoet table
     $this->loggerFactory->getLogger(LoggerFactory::TOPIC_API)->warning($e->getMessage(), [
       'requestMethod' => $this->requestMethod,
diff --git a/mailpoet/lib/API/REST/API.php b/mailpoet/lib/API/REST/API.php
index 9cb738a69d..a6cfd69100 100644
--- a/mailpoet/lib/API/REST/API.php
+++ b/mailpoet/lib/API/REST/API.php
@@ -83,7 +83,7 @@ class API {
       ? new ErrorResponse($e->getStatusCode(), $e->getMessage(), $e->getErrorCode(), $e->getErrors())
       : new ErrorResponse(500, __('An unknown error occurred.', 'mailpoet'), 'mailpoet_automation_unknown_error');
 
-    if ($response->get_status() >= 500) {
+    if ($response->get_status() >= 500 && function_exists('error_log')) {
       error_log((string)$e); // phpcs:ignore Squiz.PHP.DiscouragedFunctions
     }
     return $response;
diff --git a/mailpoet/lib/Config/TranslationUpdater.php b/mailpoet/lib/Config/TranslationUpdater.php
index 922caa4d10..e61604b4b7 100644
--- a/mailpoet/lib/Config/TranslationUpdater.php
+++ b/mailpoet/lib/Config/TranslationUpdater.php
@@ -165,7 +165,9 @@ class TranslationUpdater {
     if (class_exists(Debugger::class)) {
       Debugger::log($message, ILogger::ERROR);
     }
-    error_log($message); // phpcs:ignore Squiz.PHP.DiscouragedFunctions.Discouraged
+    if (function_exists('error_log')) {
+      error_log($message); // phpcs:ignore Squiz.PHP.DiscouragedFunctions.Discouraged
+    }
   }
 
   /**