Hey, I was using IP-1.4.9 using php 5.5 before I upgraded to IP-1.5.9 using php 7.0.
When I try to send an email I get the following errors:
browser error message:
It seems that the application stuck because of an error.
Not only this, but I also got an error related to the website : ERR_SPDY_PROTOCOL_ERROR
I also tried to change it to php 5.6, BUT I am still not able to send any emails.