WMS HTTPS of Catastro de España not working

[ivanrome]

What steps will reproduce the problem?

1. Download some area in Spain
2. Active the Imaginary "Catastro de España": Imágenes > Mapa > Catastro de España

What is the expected result?

JOSM should render the imaginary "Catastro de España"

What happens instead?

It get this error for the areas I dont have in cache :
javax.net.ssl.HandshakeException ; sun.security.validator.Validatorexception: PKIX path building failed:

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

See attached file

Relative:URL: ^/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2021-11-01 23:05:46 +0100 (Mon, 01 Nov 2021)
Revision:18303
Build-Date:2021-11-01 22:25:18
URL:https://josm.openstreetmap.de/svn/trunk

Identification: JOSM/1.5 (18303 es) Linux Mint 20.2
Memory Usage: 308 MB / 1986 MB (95 MB allocated, but free)
Java version: 11.0.11+9-Ubuntu-0ubuntu2.20.04, Ubuntu, OpenJDK 64-Bit Server VM
Look and Feel: javax.swing.plaf.metal.MetalLookAndFeel
Screen: :0.0 1920×1080 (scaling 1.00×1.00)
Maximum Screen Size: 1920×1080
Best cursor sizes: 16×16→16×16, 32×32→32×32
Environment variable LANG: es_ES.UTF-8
System property file.encoding: UTF-8
System property sun.jnu.encoding: UTF-8
Locale info: es_ES
Numbers with default locale: 1234567890 -> 1234567890
Desktop environment: X-Cinnamon
Java package: openjdk-11-jre:amd64-11.0.11+9-0ubuntu2~20.04
fonts-noto: fonts-noto:-
Dataset consistency test: No problems found

Plugins:
+ FixAddresses (35640)
+ OpeningHoursEditor (35640)
+ areaselector (368)
+ austriaaddresshelper (1597341117)
+ ejml (35458)
+ log4j (35852)
+ reverter (35846)
+ tageditor (35640)
+ turnlanes-tagging (288)
+ utilsplugin2 (35856)

Map paint styles:
- https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Enhanced_Lane_and_Road_Attributes&zip=1
- https://raw.githubusercontent.com/species/josm-preset-traffic_sign_direction/master/direction.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/Coloured_Postcode&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/AddressValidator&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Cycleways&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Lane_features&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Lane_features_ryg&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/Cycleways&zip=1
- https://josm.openstreetmap.de/josmfile?page=Styles/ParkingLanes&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Styles/Sidewalks&zip=1
+ https://josm.openstreetmap.de/josmfile?page=Styles/Coloured_Streets&zip=1

Last errors/warnings:
- 00037.840 W: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
- 00037.847 W: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
- 00037.848 W: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
- 00037.878 W: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
- 00039.961 W: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
- 00039.962 W: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
- 00039.962 W: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
- 00039.996 W: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
- 00040.000 W: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
- 00040.001 W: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target. Causa: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target