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OpenCart 4 install throws PHP offset error

Installing the OpenCart 4 version of the extension throws a PHP offset error in the admin user administration page.

1 public report

1 business: $19 · CSV download · All sales final

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What's going wrong

Some shop owners who installed the OpenCart 4 build of this fee extension found an error in the admin area under user administration, pointing to a string-offset problem in one controller file. The page fails to load after installation, so the owner cannot manage the module from the back end. Owners running newer OpenCart 4 releases need a clean upgrade path. The gap is a compatibility checker and installer test that runs before a release reaches shop owners, plus a rescue service for owners whose admin pages break after install.

AI-assisted: written with the help of AI from the reports.

Products affected

X-Offer / Optional fee.

Related problems

Who has this problem

1 business found.

Unlock them at the top of this page — $19.

All sales are final — no refunds.

Each business's name, the address it published, and the page it was published on. Paid through Stripe; you get a private page to bookmark, with a CSV download.