Can't add imagery layers from Luxembourg's wms_endpoint imagery entry

[Stereo]

What steps will reproduce the problem?

• Download OSM data anywhere in Luxembourg
• From the Imagery layer, choose "geoportail.lu all layers"
• Add any layer

What is the expected result?

Layer gets added

What happens instead?

Error shown: "missing parameters format"

It looks like the wms requests are being made, but to http://wmts1.geoportail.lu/opendata/service??FORMAT=image/jpeg etc. - note the double ?. The wms server returns <ServiceException>missing parameters ['format']</ServiceException> when that's the case, but removing that gets an image.

Please provide any additional information below. Attach a screenshot if possible.

URL:https://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2018-05-31 00:51:20 +0200 (Thu, 31 May 2018)
Build-Date:2018-05-30 22:58:01
Revision:13878
Relative:URL: ^/trunk

Identification: JOSM/1.5 (13878 en_GB) Mac OS X 10.13.5
OS Build number: Mac OS X 10.13.5 (17F77)
Memory Usage: 1949 MB / 7282 MB (439 MB allocated, but free)
Java version: 1.8.0_171-b11, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
Screen: Display 69733632 1680x1050
Maximum Screen Size: 1680x1050
VM arguments: [-Djava.library.path=/Applications/JOSM.app/Contents/MacOS, -DLibraryDirectory=${HOME}/Library, -DDocumentsDirectory=${HOME}/Documents, -DApplicationSupportDirectory=${HOME}/Library/Application Support, -DCachesDirectory=${HOME}/Library/Caches, -DSandboxEnabled=false, -Dapple.laf.useScreenMenuBar=true, -Dcom.apple.macos.use-file-dialog-packages=true, -Dcom.apple.macos.useScreenMenuBar=true, -Dcom.apple.mrj.application.apple.menu.about.name=JOSM, -Dcom.apple.smallTabs=false, -Dawt.useSystemAAFontSettings=on, -Dswing.aatext=true, -Dsun.java2d.xrender=true

-Dsun.java2d.xrender=true
]
Dataset consistency test: No problems found

Plugins:
+ AddrInterpolation (34109)
+ CommandLine (34109)
+ DirectDownload (34109)
+ DirectUpload (34109)
+ FixAddresses (34109)
+ HouseNumberTaggingTool (34109)
+ ImportImagePlugin (34219)
+ ImproveWay (17)
+ Mapillary (v1.5.14+post13733)
+ MovementAlert (1509877002)
+ OSMRecPlugin (34144)
+ OpenStreetCam (145)
+ OpeningHoursEditor (34095)
+ PicLayer (34170)
+ RoadSigns (34109)
+ alignways (34109)
+ apache-commons (34109)
+ apache-http (34109)
+ areaselector (336)
+ austriaaddresshelper (1525848529)
+ auto_tools (1524593642)
+ buildings_tools (34212)
+ changeset-viewer (15)
+ conflation (0.5.9)
+ contourmerge (1032)
+ download_along (34081)
+ ejml (34126)
+ geojson (80)
+ geotools (34125)
+ gson (34038)
+ imagery-xml-bounds (34109)
+ imagery_offset_db (34209)
+ importvec (34109)
+ jts (34038)
+ livegps (34038)
+ log4j (34038)
+ mapdust (34214)
+ merge-overlap (34109)
+ namemanager (34109)
+ opendata (34196)
+ pdfimport (34198)
+ pt_assistant (56d872a)
+ public_transport (34166)
+ public_transport_layer (34164)
+ reltoolbox (34212)
+ reverter (34109)
+ rex (36)
+ routing (34187)
+ scripting (30785)
+ splinex (34109)
+ surveyor (34109)
+ tageditor (34109)
+ terracer (34109)
+ todo (30304)
+ turnlanes (34146)
+ turnlanes-tagging (263)
+ turnrestrictions (34129)
+ undelete (34109)
+ utilsplugin2 (34263)
+ wikipedia (v1.0.1)

Tagging presets:
+ https://josm.openstreetmap.de/josmfile?page=Presets/NewTags&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/BicycleJunction&preset&zip=1
+ http://osmtools.de/josm/steps.xml
+ https://josm.openstreetmap.de/josmfile?page=Presets/Historic_Stone&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/LaneAttributes&preset&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Towers&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Golf_Course&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/PublicTransportOneClick&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Bus_lanes&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Heritage&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Historical_Objects&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/public_bookcase&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/Stolpersteine&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Presets/BuildingPreset&zip=1
+ http://zibi.openstreetmap.org.pl/kendzi/k/Simple3dPreset/s3db-preset.zip

Map paint styles:
- https://josm.openstreetmap.de/josmfile?page=Styles/Lit&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/ParkingLanes&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Surface&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Maxspeed&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Modified&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/LessObtrusiveNodes&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/AddressValidator&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Noname&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Power&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Surface-DataEntry&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/PowerMapping&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/BesideTheRoad_Speed&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/TreeCrownDiameter&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/SlovakiaBicycleRoutes&style&zip=1
- https://github.com/simon04/coloured-addresses.mapcss/raw/master/dist/coloured-addresses.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/Coloured_Streets&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Coloured_Suburb&style&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Cycleways&style&zip=1
- http://maps.openstreetmap.ie/josm/townland.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/SlovakiaBicycleRoutes&style&zip=1
- https://github.com/GlassOceanos/indoor-JOSM-style/archive/master.zip
- https://josm.openstreetmap.de/josmfile?page=Styles/PublicTransport&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/PTStops&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Styles/SlovakiaBicycleRoutes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/SimpleRoofTags&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/SimpleBuildingTags&zip=1

Validator rules:
+ http://www.openrailwaymap.org/validator/openrailwaymap.validator.mapcss
+ https://josm.openstreetmap.de/josmfile?page=Rules/GermanySpecific&zip=1
+ http://www.openrailwaymap.org/validator/de-openrailwaymap.validator.mapcss
+ https://josm.openstreetmap.de/josmfile?page=Rules/MissingWeekdays&zip=1
+ https://raw.githubusercontent.com/nlehuby/transport_mapcss/master/transport.validator.mapcss

Last errors/warnings:
- E: missing parameters ['format']
- E: missing parameters ['format']
- E: missing parameters ['format']
- E: missing parameters ['format']
- E: missing parameters ['format']
- E: missing parameters ['format']
- E: missing parameters ['format']
- E: missing parameters ['format']
- E: missing parameters ['format']
- E: missing parameters ['format']

[Klumbumbus]

Works for me. Also with the old URL https://josm.openstreetmap.de/wiki/Maps/Luxembourg?action=diff&version=39

(with r13922)

[Don-vip]

Closed as duplicate of #16350.

[Stereo]

Thanks!