Quform PHP contact form stopped working

[takora]

Hello. I’ve been using the Quform contact form for years, and it just started returning the following error:

Fatal error: Uncaught PHPMailer\PHPMailer\Exception: SMTP Error: Could not authenticate. in /mnt/stor1-wc1-dfw1/380423/462687/www.(mySite).com/web/content/quform/vendor/phpmailer/phpmailer/src/PHPMailer.php:2384 Stack trace: #0 /mnt/stor1-wc1-dfw1/380423/462687/www.(mySite).com/web/content/quform/vendor/phpmailer/phpmailer/src/PHPMailer.php(2175): PHPMailer\PHPMailer\PHPMailer->smtpConnect(Array) #1 /mnt/stor1-wc1-dfw1/380423/462687/www.(mySite).com/web/content/quform/vendor/phpmailer/phpmailer/src/PHPMailer.php(1798): PHPMailer\PHPMailer\PHPMailer->smtpSend(‘Date: Mon, 20 A…’, ‘–b1=_PO4KlJqCU…’) #2 /mnt/stor1-wc1-dfw1/380423/462687/www.(mySite).com/web/content/quform/vendor/phpmailer/phpmailer/src/PHPMailer.php(1615): PHPMailer\PHPMailer\PHPMailer->postSend() #3 /mnt/stor1-wc1-dfw1/380423/462687/www.(mySite).com/web/content/quform/process.php(389): PHPMailer\PHPMailer\PHPMailer->send() #4 /mnt/stor1-wc1-dfw1/380423/462687/www.(mySite).com/web/content/quform/process.php(441): process(Object(Quform), in /mnt/stor1-wc1-dfw1/380423/462687/www.(mySite).com/web/content/quform/vendor/phpmailer/phpmailer/src/PHPMailer.php on line 2384

I can usually install and get these things running, but I’m not technical at all with the coding, so I don’t really know where to start. From that error message, can you tell me what is causing the issue? Thank you!

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