Cannot execute null+1 in FieldService.calculateNextSequenceId

[vjrj]

During a layer copy:

[2024-08-08 18:36:48] [info] [Spatial-service] 2024-08-08 18:36:48.809 ERROR o.g.web.errors.GrailsExceptionResolver [GrailsExceptionResolver.java:252] : NullPointerException occurred when processing request: [POST] /ws/manageLayers/copy
[2024-08-08 18:36:48] [info] Cannot execute null+1. Stacktrace follows:
[2024-08-08 18:36:48] [info] java.lang.NullPointerException: Cannot execute null+1
[2024-08-08 18:36:48] [info] #011at au.org.ala.spatial.FieldService.calculateNextSequenceId(FieldService.groovy:92)
[2024-08-08 18:36:48] [info] #011at au.org.ala.spatial.ManageLayersService.fieldMapDefault(ManageLayersService.groovy:706)
[2024-08-08 18:36:48] [info] #011at au.org.ala.spatial.ManageLayersService.fieldMap(ManageLayersService.groovy:824)
[2024-08-08 18:36:48] [info] #011at au.org.ala.spatial.ManageLayersService.createOrUpdateField(ManageLayersService.groovy:1210)
[2024-08-08 18:36:48] [info] #011at au.org.ala.spatial.ManageLayersService.updateFromRemote(ManageLayersService.groovy:1454)
[2024-08-08 18:36:48] [info] #011at au.org.ala.spatial.ManageLayersController.copy(ManageLayersController.groovy:618)
[2024-08-08 18:36:48] [info] #011at org.grails.core.DefaultGrailsControllerClass$MethodHandleInvoker.invoke(DefaultGrailsControllerClass.java:223)
[2024-08-08 18:36:48] [info] #011at org.grails.core.DefaultGrailsControllerClass.invoke(DefaultGrailsControllerClass.java:188)
[2024-08-08 18:36:48] [info] #011at org.grails.web.mapping.mvc.UrlMappingsInfoHandlerAdapter.handle(UrlMappingsInfoHandlerAdapter.groovy:90)
[2024-08-08 18:36:48] [info] #011at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1067)
[2024-08-08 18:36:48] [info] #011at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963)
[2024-08-08 18:36:48] [info] #011at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
[2024-08-08 18:36:48] [info] #011at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
[2024-08-08 18:36:48] [info] #011at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
[2024-08-08 18:36:48] [info] #011at org.grails.web.servlet.mvc.GrailsWebRequestFilter.doFilterInternal(GrailsWebRequestFilter.java:77)
[2024-08-08 18:36:48] [info] #011at au.org.ala.ws.security.Pac4jProfileManagerHttpRequestWrapperFilter.doFilter(Pac4jProfileManagerHttpRequestWrapperFilter.java:51)
[2024-08-08 18:36:48] [info] #011at au.org.ala.web.Pac4jHttpServletRequestWrapperFilter.internalFilter(Pac4jHttpServletRequestWrapperFilter.groovy:46)
[2024-08-08 18:36:48] [info] #011at org.pac4j.jee.config.AbstractConfigFilter.doFilter(AbstractConfigFilter.java:72)
[2024-08-08 18:36:48] [info] #011at org.pac4j.jee.filter.SecurityFilter.lambda$internalFilter$0(SecurityFilter.java:94)
[2024-08-08 18:36:48] [info] #011at org.pac4j.core.engine.DefaultSecurityLogic.perform(DefaultSecurityLogic.java:141)
[2024-08-08 18:36:48] [info] #011at org.pac4j.jee.filter.SecurityFilter.internalFilter(SecurityFilter.java:92)
[2024-08-08 18:36:48] [info] #011at org.pac4j.jee.config.AbstractConfigFilter.doFilter(AbstractConfigFilter.java:72)
[2024-08-08 18:36:48] [info] #011at au.org.ala.web.CooperatingFilterWrapper.doFilter(CooperatingFilterWrapper.groovy:31)
[2024-08-08 18:36:48] [info] #011at org.grails.web.filters.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:67)
[2024-08-08 18:36:48] [info] #011at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:126)
[2024-08-08 18:36:48] [info] #011at org.springframework.boot.web.servlet.support.ErrorPageFilter.access$000(ErrorPageFilter.java:64)
[2024-08-08 18:36:48] [info] #011at org.springframework.boot.web.servlet.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:101)
[2024-08-08 18:36:48] [info] #011at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:119)
[2024-08-08 18:36:48] [info] #011at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
[2024-08-08 18:36:48] [info] #011at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
[2024-08-08 18:36:48] [info] #011at java.base/java.lang.Thread.run(Thread.java:829)