diff --git a/VERSION.txt b/VERSION.txt
index 4351a7e..d7d8e42 100644
--- a/VERSION.txt
+++ b/VERSION.txt
@@ -1 +1 @@
-3.8.7
+3.8.8
diff --git a/app/Ohms/Interview/Version3.php b/app/Ohms/Interview/Version3.php
index 030b72f..e20b171 100644
--- a/app/Ohms/Interview/Version3.php
+++ b/app/Ohms/Interview/Version3.php
@@ -142,14 +142,14 @@ private function __construct($viewerconfig, $tmpDir, $cachefile)
         foreach ($interviewer_info as $part) {
             $pieces[] = $part;
         }
-        $this->data['interviewer'] = implode($pieces, '');
+        $this->data['interviewer'] = implode('', $pieces);
         
         $interviewee_info = $ohfile->record->interviewee;
         $piecese = array();
         foreach($interviewee_info as $parte) {
               $piecese[] = $parte;
         }
-        $this->data['interviewee'] = implode($piecese, '');
+        $this->data['interviewee'] = implode('', $piecese);
         unset($this->cacheFile);
     }
 
diff --git a/lib/tcpdf/tcpdf.php b/lib/tcpdf/tcpdf.php
index 0b2a7e3..85c47cc 100644
--- a/lib/tcpdf/tcpdf.php
+++ b/lib/tcpdf/tcpdf.php
@@ -16897,10 +16897,10 @@ protected function getHtmlDomArray($html) {
 					if (($dom[$key]['value'] == 'pre') OR ($dom[$key]['value'] == 'tt')) {
 						$dom[$key]['fontname'] = $this->default_monospaced_font;
 					}
-					if (!empty($dom[$key]['value']) AND ($dom[$key]['value'][0] == 'h') AND (intval($dom[$key]['value']{1}) > 0) AND (intval($dom[$key]['value']{1}) < 7)) {
+					if (!empty($dom[$key]['value']) AND ($dom[$key]['value'][0] == 'h') AND (intval($dom[$key]['value'][1]) > 0) AND (intval($dom[$key]['value'][1]) < 7)) {
 						// headings h1, h2, h3, h4, h5, h6
 						if (!isset($dom[$key]['attribute']['size']) AND !isset($dom[$key]['style']['font-size'])) {
-							$headsize = (4 - intval($dom[$key]['value']{1})) * 2;
+							$headsize = (4 - intval($dom[$key]['value'][1])) * 2;
 							$dom[$key]['fontsize'] = $dom[0]['fontsize'] + $headsize;
 						}
 						if (!isset($dom[$key]['style']['font-weight'])) {