print error message if base64 can't be decoded

diff --git a/camunda-overlay/sentiment-analysis.bpmn b/camunda-overlay/sentiment-analysis.bpmn
index 101e7ecccbaf2cfec6207d0b56c81a93c2973fcb..eb07945ee4994a9187f6de511a2b8b9a543eacc4 100644 (file)
--- a/camunda-overlay/sentiment-analysis.bpmn
+++ b/camunda-overlay/sentiment-analysis.bpmn
@@ -142,7 +142,7 @@ function getLens (b64) {
   var len = b64.length
 
   if (len % 4 > 0) {
-    throw new Error('Invalid string. Length must be a multiple of 4')
+    throw new Error('Invalid string. Length must be a multiple of 4: '+b64)
   }
 
   // Trim off extra bytes after placeholder bytes are found