Thank you so much @symptote. I tried a few things after what you said. I upgraded WP_MEMORY_LIMIT to 1024M and the problem is resolved.
I think this issue is related to the big number of options you have which generates a memory issue.
Can you please check your logs and send me the error being reported there?
I did not send mail to avoid disturbing you.
Thank you so much for your help.
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This reply was modified 4 years, 10 months ago by mycosite.