- True or false : if the system shows an error message: "no timer tick interrupt" it could be a faulty motherboard.
- Network error occurred - Guide
- Voice message downloader - Guide
- Cmos checksum error - Guide
- Insert a tick in word - Guide
- An error occurred while sending the message facebook - Facebook Forum
If you're still signed in to your WhatsApp account on another device, you'll be able to access your chats to check the status of your message.
In case you no longer have access to your account, and if you had an auto backup after you sent that message, try reinstalling WhatsApp on your iPhone.