I made some changes in the backend code and followed the following process.
cd OpenELIS-Global-2
git submodule update --init --recursive
cd dataexport
mvn clean install -DskipTests
I get the error here Compiling 12 source files to /home/docker/OpenELIS-Global-2/dataexport/dataexport-core/target/classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /home/docker/OpenELIS-Global-2/dataexport/dataexport-core/src/main/java/org/itech/fhir/dataexport/core/dao/DataExportTaskDAO.java:[6,47] cannot access org.springframework.data.jpa.repository.Query
bad class file: /home/docker/.m2/repository/org/springframework/data/spring-data-jpa/3.4.2/spring-data-jpa-3.4.2.jar(/org/springframework/data/jpa/repository/Query.class)
class file has wrong version 61.0, should be 55.0
Please remove or make sure it appears in the correct subdirectory of the classpath.