I'm having this issue while creating a vqmod for editing order notification/alert for admin. I've already tried the **Admin Dashboard Gear Solution** (to clear the theme cache), but it didn't work. And also, the order_alert.twig file had repeating lines of text that I added in the vqmod file. It seems that the edited text was added to the vqcache file as many times as I refreshed the modifications cache in the admin panel, but all of that is useless as the final admin order email still has the old template 👎 Anyhow after that I tried the Dashboard Gear Solution and cleared the theme cache and even disabled it but none of that worked. After that, I deleted all the vqcache files but now even the vqcache files from the order alert vqmod aren't appearing. Please help. My vqmod version is 2.6.3 and all other vqmods (all created by me) are working fine. There is no error/conflict in vqmod logs or the opencart error log.
If your other vQmods are working, it sounds like there probably is some error in the one you're working on. Try stripping it down to a very simple vQmod which makes a very small change and see if that works. If so, the problem is some other part of the vQmod.