Thread Starter
fooey
(@fooey)
Here is the critical error:
public_html/wp-content/plugins/post-smtp/Postman/Mobile/includes/phpqrcode/qrconst.php. Error message: Cannot declare class qrstr, because the name is already in use
+1 Also using Mailgun and having issues with emails failing with “Internal server error” – started in the last day or so.
Hello @fooey,
We hope this message finds you well.
Thank you for reaching out to our Support team. We’re truly sorry to hear that you’ve encountered this issue.
Based on the error details you’ve shared, it appears the issue may stem from a conflict with another plugin or the active theme. As a first step in troubleshooting, we recommend deactivating all other plugins except Post SMTP, then sending a test email. If the issue is resolved, you can reactivate the plugins one by one to identify the conflicting one.
Additionally, the 500 error you’re seeing seems to be originating from Mailgun’s API. A 500 status code generally points to a server-side issue on Mailgun’s end rather than a misconfiguration on your site. Here’s what we found from Mailgun’s documentation regarding such errors:
“500 Internal Server Error – An unexpected condition was encountered on the server. These are often temporary, but if they persist, please contact Mailgun support.”
Please let us know how it goes or if you’d like us to assist you further with the troubleshooting process.
Warm regards,
Support Team – WP Experts
Hello @fooey ,
We hope you are doing well.
We are marking this thread as resolved due to inactivity. If you encounter any further issues, please feel free to open a new thread.
Have a great day!
Thanks and regards,
Support Team – WP Experts
