diff --git a/src/Monolog/Formatter/NormalizerFormatter.php b/src/Monolog/Formatter/NormalizerFormatter.php
index eb071329..779e18bb 100644
--- a/src/Monolog/Formatter/NormalizerFormatter.php
+++ b/src/Monolog/Formatter/NormalizerFormatter.php
@@ -202,8 +202,12 @@ class NormalizerFormatter implements FormatterInterface
                 $data['faultactor'] = $e->faultactor;
             }
 
-            if (isset($e->detail) && (is_string($e->detail) || is_object($e->detail) || is_array($e->detail))) {
-                $data['detail'] = is_string($e->detail) ? $e->detail : reset($e->detail);
+            if (isset($e->detail)) {
+                if  (is_string($e->detail)) {
+                    $data['detail'] = $e->detail;
+                } elseif (is_object($e->detail) || is_array($e->detail)) {
+                    $data['detail'] = $this->toJson($e->detail, true);
+                }
             }
         }
 
diff --git a/src/Monolog/Handler/RotatingFileHandler.php b/src/Monolog/Handler/RotatingFileHandler.php
index c1ff25b5..f61e5eb6 100644
--- a/src/Monolog/Handler/RotatingFileHandler.php
+++ b/src/Monolog/Handler/RotatingFileHandler.php
@@ -13,6 +13,7 @@ namespace Monolog\Handler;
 
 use InvalidArgumentException;
 use Monolog\Logger;
+use Monolog\Utils;
 
 /**
  * Stores logs to files that are rotated every day and a limited number of files are kept.
@@ -46,7 +47,7 @@ class RotatingFileHandler extends StreamHandler
      */
     public function __construct(string $filename, int $maxFiles = 0, $level = Logger::DEBUG, bool $bubble = true, ?int $filePermission = null, bool $useLocking = false)
     {
-        $this->filename = $filename;
+        $this->filename = Utils::canonicalizePath($filename);
         $this->maxFiles = $maxFiles;
         $this->nextRotation = new \DateTimeImmutable('tomorrow');
         $this->filenameFormat = '{filename}-{date}';
diff --git a/src/Monolog/Handler/StreamHandler.php b/src/Monolog/Handler/StreamHandler.php
index 4cce3c39..215ae02c 100644
--- a/src/Monolog/Handler/StreamHandler.php
+++ b/src/Monolog/Handler/StreamHandler.php
@@ -12,6 +12,7 @@
 namespace Monolog\Handler;
 
 use Monolog\Logger;
+use Monolog\Utils;
 
 /**
  * Stores to any stream resource
@@ -46,7 +47,7 @@ class StreamHandler extends AbstractProcessingHandler
         if (is_resource($stream)) {
             $this->stream = $stream;
         } elseif (is_string($stream)) {
-            $this->url = $stream;
+            $this->url = Utils::canonicalizePath($stream);
         } else {
             throw new \InvalidArgumentException('A stream must either be a resource or a string.');
         }
diff --git a/src/Monolog/Utils.php b/src/Monolog/Utils.php
index 240b3742..a6977b92 100644
--- a/src/Monolog/Utils.php
+++ b/src/Monolog/Utils.php
@@ -34,6 +34,34 @@ final class Utils
         return substr($string, $start, $length);
     }
 
+    /**
+     * Makes sure if a relative path is passed in it is turned into an absolute path
+     *
+     * @param string $streamUrl stream URL or path without protocol
+     */
+    public static function canonicalizePath(string $streamUrl): string
+    {
+        $prefix = '';
+        if ('file://' === substr($streamUrl, 0, 7)) {
+            $streamUrl = substr($streamUrl, 7);
+            $prefix = 'file://';
+        }
+
+        // other type of stream, not supported
+        if (false !== strpos($streamUrl, '://')) {
+            return $streamUrl;
+        }
+
+        // already absolute
+        if (substr($streamUrl, 0, 1) === '/' || substr($streamUrl, 1, 1) === ':' || substr($streamUrl, 0, 2) === '\\\\') {
+            return $prefix.$streamUrl;
+        }
+
+        $streamUrl = getcwd() . '/' . $streamUrl;
+
+        return $prefix.$streamUrl;
+    }
+
     /**
      * Return the JSON representation of a value
      *
diff --git a/tests/Monolog/Formatter/NormalizerFormatterTest.php b/tests/Monolog/Formatter/NormalizerFormatterTest.php
index 9ea7f080..3b06380b 100644
--- a/tests/Monolog/Formatter/NormalizerFormatterTest.php
+++ b/tests/Monolog/Formatter/NormalizerFormatterTest.php
@@ -87,7 +87,7 @@ class NormalizerFormatterTest extends TestCase
         }
 
         $formatter = new NormalizerFormatter('Y-m-d');
-        $e = new \SoapFault('foo', 'bar', 'hello', (object) ['foo' => 'world']);
+        $e = new \SoapFault('foo', 'bar', 'hello', 'world');
         $formatted = $formatter->format([
             'exception' => $e,
         ]);
@@ -105,6 +105,26 @@ class NormalizerFormatterTest extends TestCase
                 'detail' => 'world',
             ],
         ], $formatted);
+
+        $formatter = new NormalizerFormatter('Y-m-d');
+        $e = new \SoapFault('foo', 'bar', 'hello', (object) array('bar' => (object) array('biz' => 'baz'), 'foo' => 'world'));
+        $formatted = $formatter->format(array(
+            'exception' => $e,
+        ));
+
+        unset($formatted['exception']['trace']);
+
+        $this->assertEquals(array(
+            'exception' => array(
+                'class' => 'SoapFault',
+                'message' => 'bar',
+                'code' => 0,
+                'file' => $e->getFile().':'.$e->getLine(),
+                'faultcode' => 'foo',
+                'faultactor' => 'hello',
+                'detail' => '{"bar":{"biz":"baz"},"foo":"world"}',
+            ),
+        ), $formatted);
     }
 
     public function testFormatToStringExceptionHandle()
diff --git a/tests/Monolog/UtilsTest.php b/tests/Monolog/UtilsTest.php
index 529e88ea..c74b96eb 100644
--- a/tests/Monolog/UtilsTest.php
+++ b/tests/Monolog/UtilsTest.php
@@ -13,6 +13,29 @@ namespace Monolog;
 
 class UtilsTest extends \PHPUnit_Framework_TestCase
 {
+    /**
+     * @param string $expected
+     * @param string $input
+     * @dataProvider providePathsToCanonicalize
+     */
+    public function testCanonicalizePath($expected, $input)
+    {
+        $this->assertSame($expected, Utils::canonicalizePath($input));
+    }
+
+    public function providePathsToCanonicalize()
+    {
+        return array(
+            array('/foo/bar', '/foo/bar'),
+            array('file://'.getcwd().'/bla', 'file://bla'),
+            array(getcwd().'/bla', 'bla'),
+            array(getcwd().'/./bla', './bla'),
+            array('file:///foo/bar', 'file:///foo/bar'),
+            array('any://foo', 'any://foo'),
+            array('\\\\network\path', '\\\\network\path'),
+        );
+    }
+
     /**
      * @param int    $code
      * @param string $msg