I am facing a weird issue with WFFM.
I have used WFFM module for contact us page in website. In the form i have few required fields which i marked as required using WFFM. Most of the time form validation works.But after few hours same page gives exception. This issue comes in some regular intervals( like 1-2 day)
The immediate fix which i am doing is the reset IIS or recycle app pool. sometimes reset IIS not works in that case i have to do a reset IIS+ web.config modification(any kind of modification).
Is there any permanent Fix for this?
I am using Sitecore 8.1(update 1) + supported WFFM also, Language fallback is enabled.
I am sensing this issue is related to Cache.
Below is the exception details.
Please let me know if anyone has solution for this.