See site email settings and error screenshots attached below
JPG, 121.7 KB, uploaded by Rotense on Sept. 11, 2018.
JPG, 117.6 KB, uploaded by Rotense on Sept. 11, 2018.
Can you post error log?
how to find error log?
This depends on how did you setup your site. Perhaps you'll find errors in your nginx logs?
Can you confirm that error also occurs on new user registration? It may be that your smtp connection data is incorrect.
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