0010301: Adding new exchange via taler://withdraw-exchange/ never stops loading

ID	Project	Category	View Status	Date Submitted	Last Update

0010301	Taler	wallet (Android App)	public	2025-08-29 16:09	2025-09-05 15:41

Reporter	mikolai	Assigned To	avalos
Priority	normal	Severity	major	Reproducibility	always
Status	assigned	Resolution	open

Summary	0010301: Adding new exchange via taler://withdraw-exchange/ never stops loading
Description	This might or not be an issue with the ToS failing to load, or potentially with our concrete setup for the Datenspuren. Unfortunately pretty bad UX for onboarding new users.
Steps To Reproduce	0. fresh Taler wallet v1.0.8 without configured exchanges 1. open taler://withdraw-exchange/exchange.taler.datenspuren.de/ 2. see the loading screen that never disappears 3. going back still does not show the exchange on the start screen, but it appears in settings under "payment providers" 4. clicking on "withdraw" brings you back to infinite loading 5. opening the terms of services manually from the list of payment providers lets me accept them 6. clicking on "withdraw" still shows the infinite loading screen 7. going back to the main screen now shows the exchange 8. clicking on "withdraw" in the bottom sheet menu now shows a form (with another bug, reported later)
Tags	datenspuren

avalos 2025-09-05 12:00 developer ~0025819	This is what I get. image.png (51,603 bytes) image.png (51,603 bytes)

avalos 2025-09-05 12:03 developer ~0025821	Error getWithdrawalDetailsForAmount TalerErrorInfo(code=WALLET_RECEIVED_MALFORMED_RESPONSE, hint=Error response did not even contain JSON. The request URL might be wrong or the service might be unavailable., message=null, extra={when={"t_ms":1757066543015}, requestUrl="https://bank.taler.datenspuren.de/conversion-info/cashin-rate?amount_credit=SPURLOS%3A0", requestMethod="GET", httpStatusCode=409, contentType="application/json; charset=UTF-8"}) {"code":5128,"hint":"SPURLOS:0 is too small to be converted"}

mikolai 2025-09-05 14:39 developer ~0025824	So maybe same issue as https://bugs.gnunet.org/view.php?id=10303

Date Modified	Username	Field	Change
2025-08-29 16:09	mikolai	New Issue
2025-08-29 16:09	mikolai	Assigned To	=> avalos
2025-08-29 16:09	mikolai	Status	new => assigned
2025-09-05 12:00	avalos	Note Added: 0025819
2025-09-05 12:00	avalos	File Added: image.png
2025-09-05 12:03	avalos	Note Added: 0025821
2025-09-05 14:39	mikolai	Note Added: 0025824
2025-09-05 15:41	mikolai	Tag Attached: datenspuren