On civi 4.7.27 and wordpress 4.9
After recently upgrading both civi and wordpress I have noticed an issue that I have not been able to resolve.
On the contribution pages, if I have Membership section enabled AND Contribution Amounts section enabled, everything works fine. If I have just Membership section enabled, everything work fine. However, if I have just the Contribution Amounts section enabled, after submitting the contribution, users will land on an error 500 page. The contribution will be completed and the record will be stored in civi,but the confirmation email will not be sent. After hours of trouble shooting I have narrowed it down to: this only happens when the Contribution Amounts section is enabled by itself. Everything was wirking fine, until the recent upgrades. The error logs I can find are not giving me any useful information.
Does anyone have any ideas?