try test 4

controllers/TshieldWebhookController.php

@@ -129,6 +129,7 @@ class TshieldWebhookController
             'method' => $method,
             'uri' => $uri,
             'ip' => $ip,
+            'log_file' => $this->logFilePath,
             'request_raw' => $rawBody,
             'request_json' => $decodedBody,
             'response_status' => $response->getStatusCode(),
@@ -144,9 +145,16 @@ class TshieldWebhookController
             $encoded = '{"ts":"' . $ts . '","service":"tshield_webhook","request_id":"' . $requestId . '","error":"unable_to_encode_log"}';
         }
 
+        $written = false;
         try {
-            @file_put_contents($this->logFilePath, $encoded . "\n", FILE_APPEND | LOCK_EX);
+            $written = (@file_put_contents($this->logFilePath, $encoded . "\n", FILE_APPEND | LOCK_EX) !== false);
         } catch (\Throwable $e) {
+            $written = false;
+        }
+
+        if (!$written) {
+            $lastError = error_get_last();
+            error_log('[TShieldWebhook] failed_to_write_log file=' . $this->logFilePath . ' error=' . json_encode($lastError));
         }
 
         error_log('[TShieldWebhook] ' . $encoded);
@@ -168,6 +176,7 @@ class TshieldWebhookController
             'method' => $method,
             'uri' => $uri,
             'ip' => $ip,
+            'log_file' => $this->logFilePath,
             'request_raw' => $rawBody,
         ];
 
@@ -176,9 +185,16 @@ class TshieldWebhookController
             $encoded = '{"ts":"' . $ts . '","service":"tshield_webhook","event":"received","request_id":"' . $requestId . '","error":"unable_to_encode_log"}';
         }
 
+        $written = false;
         try {
-            @file_put_contents($this->logFilePath, $encoded . "\n", FILE_APPEND | LOCK_EX);
+            $written = (@file_put_contents($this->logFilePath, $encoded . "\n", FILE_APPEND | LOCK_EX) !== false);
         } catch (\Throwable $e) {
+            $written = false;
+        }
+
+        if (!$written) {
+            $lastError = error_get_last();
+            error_log('[TShieldWebhook] failed_to_write_log file=' . $this->logFilePath . ' error=' . json_encode($lastError));
         }
 
         error_log('[TShieldWebhook] ' . $encoded);