This is related to an update of contact form 7 (version 5.2.1). The error code can be found here: https://ww.wp.xz.cn/support/topic/after-5-2-1-update-forms-not-working/
Thread Starter
YIPiT
(@yipit)
Fixed it by reverting to a previous backup
Thread Starter
YIPiT
(@yipit)
Thanks so much for the answer. I am quite comfortable with code, so it would be great if you could point me in the right direction.
Thread Starter
YIPiT
(@yipit)