Hi folks, it looks like that every single http request from our POS I Extensions towards our app url is failing with POS version 10.19.0. Tested on multiple iPhones & iPads. This happens for our (OpenFiskal) POS UI Extensions, but also for others. Any clue? We are using the “relative path mecha…

@Christof_Zirkler we’ve identified the issue and have made a mitigation that will be applied on the next settings sync (You can force this by tapping on Connectivity icon in bottom left corner → Store data → Refresh all) Could you verify if this has mitigated the issue for you?

Looks like this issue is related to this issue? [image] URGENT: Shopify POS 10.19.0 api.cart.addLineItem(variantId) has stopped working for newly-created variantIds Extensions We are currently actively trying to get additional logs in our dev environment, but i…

Yep. I tested a handfull of POS UI Extensions, they are all pretty much completely broken right now. All are saying something like “cant find x”, “cant connect to server”, “not a valid url”. @remy727 do you know someone from Shopify to tag here, so we can get Shopify eyes on this issue ASAP?

Hello @Alan_G , can you please take a look on this? Thank you! cc @Liam-Shopify

FYI: With the development server, everything works as expected.

Hey :waving_hand: thanks for the report. We’re investigating this issue, if you have any further logs or information to share to reproduce that would help. Thank you.

@Christof_Zirkler are you experiencing this with all users on device or a subset of users?

We were able to test this on 3 devices, it happens on all 3.

@Aaron_Schubert the error we are getting back from fetch() on POS is "/pos-print-extension/api/end-of-day-reports" cannot be parsed as a URL [Bildschirmfoto 2026-01-20 um 12.38.05]

Many thanks Aaron! It works after Sync + POS App restart. :folded_hands:

hey @Aaron_Schubert I work with Derrick from this thread URGENT: Shopify POS 10.19.0 api.cart.addLineItem(variantId) has stopped working for newly-created variantIds , did you have anyone take a look on it? It’s affecting all of our apps

URGENT Shopify POS 10.19.0: Every HTTP request failing

Extensions

remy727 January 20, 2026, 9:01am 2

Looks like this issue is related to this issue?

Topic		Replies	Views
URGENT: Shopify POS 10.19.0 api.cart.addLineItem(variantId) has stopped working for newly-created variantIds Extensions pos-extensions	1	172	May 12, 2026
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URGENT Shopify POS 10.19.0: Every HTTP request failing

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