fix(notice): fatal when trying to write into unwritable

src/WP/WPCapture.php

@@ -87,6 +87,10 @@ class WPCapture {
 			}
 		}
 
+        if (!is_writable($log_file)) {
+            $this->add_notice_for_file($log_file);
+            return false;
+        }
         return true;
 	}
 

src/WPDeskLoggerFactory.php

@@ -114,8 +114,10 @@ class WPDeskLoggerFactory extends BasicLoggerFactory
      */
     private function appendMainLog($logger) {
         $wpCapture = $this->captureWPLog();
+        if (is_writable($wpCapture->get_log_file())) {
             $this->appendFileLog($logger, $wpCapture->get_log_file());
         }
+    }
 
     /**
      * @param Logger $logger