feat: log exception classname and all previous exceptions

Author: kenjis

system/Debug/Exceptions.php

@@ -125,12 +125,26 @@ public function exceptionHandler(Throwable $exception)
         [$statusCode, $exitCode] = $this->determineCodes($exception);
 
         if ($this->config->log === true && ! in_array($statusCode, $this->config->ignoreCodes, true)) {
-            log_message('critical', "{message}\nin {exFile} on line {exLine}.\n{trace}", [
+            log_message('critical', get_class($exception) . ": {message}\nin {exFile} on line {exLine}.\n{trace}", [
                 'message' => $exception->getMessage(),
                 'exFile'  => clean_path($exception->getFile()), // {file} refers to THIS file
                 'exLine'  => $exception->getLine(), // {line} refers to THIS line
                 'trace'   => self::renderBacktrace($exception->getTrace()),
             ]);
+
+            // Get the first exception.
+            $last = $exception;
+
+            while ($prevException = $last->getPrevious()) {
+                $last = $prevException;
+
+                log_message('critical', '[Caused by] ' . get_class($prevException) . ": {message}\nin {exFile} on line {exLine}.\n{trace}", [
+                    'message' => $prevException->getMessage(),
+                    'exFile'  => clean_path($prevException->getFile()), // {file} refers to THIS file
+                    'exLine'  => $prevException->getLine(), // {line} refers to THIS line
+                    'trace'   => self::renderBacktrace($prevException->getTrace()),
+                ]);
+            }
         }
 
         $this->request  = Services::request();