response header check if it exists for binary responses before extracting the filename from it

Author: mrin9

src/components/api-request.js

@@ -1575,14 +1575,16 @@ export default class ApiRequest extends LitElement {
         if (this.responseIsBlob) {
           const contentDisposition = fetchResponse.headers.get('content-disposition') || '';
           let filenameFromContentDeposition = 'filename';
-          const filenameStarRegexMatch = contentDisposition.match(/filename\*=\s*UTF-8''([^;]+)/); // Support Headers like >>> Content-Disposition: attachment; filename*=UTF-8''example%20file.pdf
-          if (filenameStarRegexMatch) {
-            filenameFromContentDeposition = decodeURIComponent(filenameStarRegexMatch[1]); // the filename* format in the Content-Disposition header follows RFC 5987, which allows encoding non-ASCII characters using percent encoding. so example%20file.pdf becomes example file.pdf
-          } else {
-            // Fallback to the regular filename format
-            const filenameMatch = contentDisposition.match(/filename="?([^"]+)"?/); // Content-Disposition: attachment; filename=example.pdf
-            if (filenameMatch) {
-              filenameFromContentDeposition = filenameMatch[1];
+          if (contentDisposition) {
+            const filenameStarRegexMatch = contentDisposition.match(/filename\*=\s*UTF-8''([^;]+)/); // Support Headers like >>> Content-Disposition: attachment; filename*=UTF-8''example%20file.pdf
+            if (filenameStarRegexMatch) {
+              filenameFromContentDeposition = decodeURIComponent(filenameStarRegexMatch[1]); // the filename* format in the Content-Disposition header follows RFC 5987, which allows encoding non-ASCII characters using percent encoding. so example%20file.pdf becomes example file.pdf
+            } else {
+              // Fallback to the regular filename format
+              const filenameMatch = contentDisposition.match(/filename="?([^"]+)"?/); // Content-Disposition: attachment; filename=example.pdf
+              if (filenameMatch) {
+                filenameFromContentDeposition = filenameMatch[1];
+              }
             }
           }
           this.respContentDisposition = filenameFromContentDeposition;