Don't break chat when no warning reason

1 files changed, 3 insertions, 2 deletions

diff --git a/src/js-components/chat.ts b/src/js-components/chat.ts
index 91dc6720..bb7028d2 100644
--- a/src/js-components/chat.ts
+++ b/src/js-components/chat.ts
@@ -34,11 +34,12 @@ export async function openWarningChat(warningMessage: string): Promise<void> {
     const userNameData = await utils.asyncRequestToServer("GET", "/api/getUsername?userID=" + Config.config.userID);
     const userName = userNameData.ok ? JSON.parse(userNameData.responseText).userName : "";
     const publicUserID = await utils.getHash(Config.config.userID);
+    const warningReasonMatch = warningMessage.match(/Warning reason: '(.+)'/);
 
     openChat({
         displayName: `${userName ? userName : ``}${userName !== publicUserID ? ` | ${publicUserID}` : ``}`,
-        composerInitialValue: `I got a warning and want to know what I need to do to improve. ` +
-                              `Warning reason: ${warningMessage.match(/Warning reason: '(.+)'/)[1]}`,
+        composerInitialValue: `I got a warning and want to know what I need to do to improve.` +
+                                warningReasonMatch ? ` Warning reason: ${warningReasonMatch[1]}` : ``,
         customDescription: chrome.i18n.getMessage("warningChatInfo")
     });
 }
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