Problem with pom.xml

Hello everybody

I am Pablo Amado an GIS Analyst from GMV.

I am trying to use pull openroute service in docker, but it appears the following error in the container:

### openrouteservice configuration ###
ors-config.json exists in ors-conf folder. Copy config to /ors-core/openrouteservice/src/main/resources/ors-config.json
### Package openrouteservice and deploy to Tomcat ###
6221 [ERROR] [ERROR] Some problems were encountered while processing the POMs:
[FATAL] Non-resolvable parent POM for org.heigit.ors:openrouteservice:6.7.0: Could not transfer artifact org.springframework.boot:spring-boot-starter-parent:pom:2.3.5.RELEASE from/to HeiGIT main (https://repo.heigit.org/artifactory/main): Transfer failed for https://repo.heigit.org/artifactory/main/org/springframework/boot/spring-boot-starter-parent/2.3.5.RELEASE/spring-boot-starter-parent-2.3.5.RELEASE.pom and 'parent.relativePath' points at wrong local POM @ line 66, column 13
 @ 
6254 [ERROR] The build could not read 1 project -> [Help 1]
6257 [ERROR]   
6261 [ERROR]   The project org.heigit.ors:openrouteservice:6.7.0 (/ors-core/openrouteservice/pom.xml) has 1 error
6265 [ERROR]     Non-resolvable parent POM for org.heigit.ors:openrouteservice:6.7.0: Could not transfer artifact org.springframework.boot:spring-boot-starter-parent:pom:2.3.5.RELEASE from/to HeiGIT main (https://repo.heigit.org/artifactory/main): Transfer failed for https://repo.heigit.org/artifactory/main/org/springframework/boot/spring-boot-starter-parent/2.3.5.RELEASE/spring-boot-starter-parent-2.3.5.RELEASE.pom and 'parent.relativePath' points at wrong local POM @ line 66, column 13: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target -> [Help 2]
6271 [ERROR] 
6276 [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
6277 [ERROR] Re-run Maven using the -X switch to enable full debug logging.
6278 [ERROR] 
6278 [ERROR] For more information about the errors and possible solutions, please read the following articles:
6280 [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException
6281 [ERROR] [Help 2] http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableModelException
Using CATALINA_BASE:   /usr/local/tomcat
Using CATALINA_HOME:   /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME:        /usr/local/openjdk-11

The pom file bellow is inaccessible from outside so I cannot resolve this dependency error.

https://repo.heigit.org/artifactory/main/org/springframework/boot/spring-boot-starter-parent/2.3.5.RELEASE/spring-boot-starter-parent-2.3.5.RELEASE.pom

I tried with several versions with the same error.

Can you help me?

Best Regards

Pablo