diff --git a/multi.html b/multi.html
index 54b854bf..698e588a 100644
--- a/multi.html
+++ b/multi.html
@@ -1773,8 +1773,8 @@ const teamsCount = 2;
 			</ul>
 			<div class="dialog-control">
 				<button class="dialog-clear brown-button" type="reset"></button>
-				<button class="dialog-close brown-button" value="cancel"></button>
-				<button class="dialog-confirm brown-button" type="submit"></button>
+				<button class="dialog-close brown-button" formmethod="dialog" value="cancel"></button>
+				<button class="dialog-confirm brown-button" type="submit" value="submit"></button>
 			</div>
 		</form>
 	</dialog>
diff --git a/script.js b/script.js
index ff65f0cb..aab63ec5 100644
--- a/script.js
+++ b/script.js
@@ -3105,7 +3105,7 @@ function initialize() {
 			selectedDeviceId = localStorage.getItem(cfgPrefix + sourceSelect_id);
 			if (videoInputDevices.every(device=>device.deviceId != selectedDeviceId))
 			{
-				selectedDeviceId = videoInputDevices[0].deviceId;
+				selectedDeviceId = videoInputDevices?.[0]?.deviceId;
 			}
 			if (videoInputDevices.length >= 1) {
 				videoInputDevices.forEach((element) => {
diff --git a/service-worker.js b/service-worker.js
index cba1b161..ecf0d8d2 100644
--- a/service-worker.js
+++ b/service-worker.js
@@ -54395,7 +54395,7 @@ const cachesMap = new Map([
 	],
 	[
 		"multi.html",
-		"87bcda44a4def639b642ab3fadc32cb7"
+		"afd43a4746a19c65eb9d4da3b341c74c"
 	],
 	[
 		"script-custom_elements.js",
@@ -54415,11 +54415,11 @@ const cachesMap = new Map([
 	],
 	[
 		"script.js",
-		"fe31655ca750f6e030ae6f25b7c5b5a8"
+		"40fc743766f11484a4da19c0b13c3d8d"
 	],
 	[
 		"solo.html",
-		"633cdb0ed0786321ae54451b6bd8e08b"
+		"757690e647d6a30f69ad942c85550757"
 	],
 	[
 		"style-fix-html2canvas.css",
@@ -54439,7 +54439,7 @@ const cachesMap = new Map([
 	],
 	[
 		"triple.html",
-		"04878ddb76de4998e8ee62bf91be60e2"
+		"9de212235c69fe05833e1ff6ea06597b"
 	],
 	[
 		"languages/en.css",
diff --git a/solo.html b/solo.html
index 4bd2efef..69147071 100644
--- a/solo.html
+++ b/solo.html
@@ -1463,8 +1463,8 @@ const teamsCount = 1;
 			</ul>
 			<div class="dialog-control">
 				<button class="dialog-clear brown-button" type="reset"></button>
-				<button class="dialog-close brown-button" value="cancel"></button>
-				<button class="dialog-confirm brown-button" type="submit"></button>
+				<button class="dialog-close brown-button" formmethod="dialog" value="cancel"></button>
+				<button class="dialog-confirm brown-button" type="submit" value="submit"></button>
 			</div>
 		</form>
 	</dialog>
diff --git a/triple.html b/triple.html
index 7b3c6787..68d24744 100644
--- a/triple.html
+++ b/triple.html
@@ -2308,8 +2308,8 @@ const teamsCount = 3;
 			</ul>
 			<div class="dialog-control">
 				<button class="dialog-clear brown-button" type="reset"></button>
-				<button class="dialog-close brown-button" value="cancel"></button>
-				<button class="dialog-confirm brown-button" type="submit"></button>
+				<button class="dialog-close brown-button" formmethod="dialog" value="cancel"></button>
+				<button class="dialog-confirm brown-button" type="submit" value="submit"></button>
 			</div>
 		</form>
 	</dialog>