Front end HTTP ERROR 500 on checkout and customer accounts

[Mikmaster]

Hi all,

I have successfully installed a clean 8.1.0 store, and everything is working great on the backend. However, I am receiving HTTP ERROR 500 pages on the frontend when creating customer accounts and placing orders.

superfly.com.ve/module/ps_wirepayment/validation

superfly.com.ve/module/ps_cashondelivery/validation

After the error, I checked on the backend and found that the customer accounts and orders were generated just fine. On the frontend, after refreshing the HTTP ERROR 500 page, I saw that the account was created and the order was placed successfully.

I haven't found the answer to this problem on the forums, I'd appreciate any help.

Edited November 6, 2023 by Mikmaster (see edit history)

[PAULIU5]

I am having the same problem. Newly instaled prestashop, after registration on last button press to finish registration, I got same error. Debuger doesnt show anything. Just same error 500. 
Trying to pay for products, makes same error. No extra modules installed.