Hello, I am working on my new update to version 1.5.x with my testsite and everything seems to working fine except for the send email to customers page in the admin section on the site. It keeps showing an error message that says "Warning: an error occured, please refresh the page and try again. I refreshed several times and I also tried to reload the email folder to the site and it still says the same thing. What could the problem be and can I please have a solution.
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