This GET asks for a dataset with a circle filter. It's more than 2048 chars, which is a typical limit of a GET query request. The server (maybe the API gateway, maybe the data service, maybe a proxy upstream, it does not matter) answers with 404.
This endpoint should be a POST. Maybe it's a breaking change, but I doesn't look like a big one.
https://example.com/qwcpruebas/api/v1/data/scan/ExampleData/?crs=EPSG:3857&filter_geom=%7B%22type%22:%22Polygon%22,%22coordinates%22:[[[-425883.3337478248,4902420.766583908],[-425883.8614626346,4902435.878358861],[-425885.44203609024,4902450.916510765],[-425888.0677677969,4902465.807775256],[-425891.72586545366,4902480.479603591],[-425896.3985071763,4902494.860516096],[-425902.06292832416,4902508.880450412],[-425908.6915324068,4902522.471102826],[-425916.2520255313,4902535.566261048],[-425924.7075737352,4902548.102126783],[-425934.0169824377,4902560.017626552],[-425944.1348971353,4902571.254709239],[-425955.0120243646,4902581.758628907],[-425966.5953718552,4902591.478211514],[-425978.8285067024,4902600.366104231],[-425991.6518303029,4902608.379006139],[-426005.00286871317,4902615.477879184],[-426018.8165770161,4902621.628138371],[-426033.0256562133,4902626.7998202555],[-426047.5608810993,4902630.967728922],[-426062.3514375196,4902634.11155874],[-426077.3252673699,4902636.215993286],[-426092.40941965644,4902637.270779966],[-426107.5304059055,4902637.270779966],[-426122.614558192,4902636.215993286],[-426137.58838804235,4902634.11155874],[-426152.37894446263,4902630.967728922],[-426166.91416934866,4902626.7998202555],[-426181.12324854586,4902621.628138371],[-426194.9369568488,4902615.477879184],[-426208.28799525904,4902608.379006139],[-426221.11131885956,4902600.366104231],[-426233.34445370676,4902591.478211514],[-426244.92780119734,4902581.758628907],[-426255.80492842663,4902571.254709239],[-426265.92284312425,4902560.017626552],[-426275.23225182673,4902548.102126783],[-426283.68780003063,4902535.566261048],[-426291.24829315516,4902522.471102826],[-426297.8768972378,4902508.880450412],[-426303.5413183856,4902494.860516096],[-426308.2139601083,4902480.479603591],[-426311.872057765,4902465.807775256],[-426314.4977894717,4902450.916510765],[-426316.07836292736,4902435.878358861],[-426316.6060777371,4902420.766583908],[-426316.07836292736,4902405.654808955],[-426314.4977894717,4902390.616657051],[-426311.872057765,4902375.7253925605],[-426308.2139601083,4902361.053564225],[-426303.5413183856,4902346.67265172],[-426297.8768972378,4902332.652717405],[-426291.24829315516,4902319.06206499],[-426283.68780003063,4902305.966906768],[-426275.23225182673,4902293.431041034],[-426265.92284312425,4902281.515541265],[-426255.80492842663,4902270.278458578],[-426244.92780119734,4902259.77453891],[-426233.34445370676,4902250.054956303],[-426221.11131885956,4902241.1670635855],[-426208.28799525904,4902233.154161678],[-426194.9369568488,4902226.055288632],[-426181.12324854586,4902219.905029446],[-426166.91416934866,4902214.733347561],[-426152.37894446263,4902210.565438895],[-426137.58838804235,4902207.421609077],[-426122.614558192,4902205.317174531],[-426107.5304059055,4902204.26238785],[-426092.40941965644,4902204.26238785],[-426077.3252673699,4902205.317174531],[-426062.3514375196,4902207.421609077],[-426047.5608810993,4902210.565438895],[-426033.0256562133,4902214.733347561],[-426018.8165770161,4902219.905029446],[-426005.00286871317,4902226.055288632],[-425991.6518303029,4902233.154161678],[-425978.8285067024,4902241.1670635855],[-425966.5953718552,4902250.054956303],[-425955.0120243646,4902259.77453891],[-425944.1348971353,4902270.278458578],[-425934.0169824377,4902281.515541265],[-425924.7075737352,4902293.431041034],[-425916.2520255313,4902305.966906768],[-425908.6915324068,4902319.06206499],[-425902.06292832416,4902332.652717405],[-425896.3985071763,4902346.67265172],[-425891.72586545366,4902361.053564225],[-425888.0677677969,4902375.7253925605],[-425885.44203609024,4902390.616657051],[-425883.8614626346,4902405.654808955],[-425883.3337478248,4902420.766583908]]],%22center%22:[-426099.969912781,4902420.766583908],%22radius%22:216.63616495614406,%22crs%22:%7B%22type%22:%22name%22,%22properties%22:%7B%22name%22:%22EPSG:3857%22%7D%7D%7D
