I'm getting this when I try to run the build engine, not the server, what do you reset on a build engine?

I get this at jbe startup

!SESSION 2018-12-20 09:42:33.077 -----------------------------------------------
eclipse.buildId=unknown
java.fullversion=8.0.5.25 - pxa6480sr5fp25-20181030_01(SR5 FP25)
JRE 1.8.0 Linux amd64-64-Bit Compressed References 20181029_400846 (JIT enabled, AOT enabled)
OpenJ9   - c5c78da
OMR      - 3d5ac33
IBM      - 8c1bdc2
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US

!ENTRY com.ibm.team.repository.rcp.core.nl1 2 0 2018-12-20 09:42:34.309
!MESSAGE Could not resolve module: com.ibm.team.repository.rcp.core.nl1 [241]
  Unresolved requirement: Fragment-Host: com.ibm.team.repository.rcp.core; bundle-version="[3.1.0,4.0.0)"
  Unresolved requirement: Fragment-Host: com.ibm.team.repository.rcp.core; bundle-version="[3.1.0,4.0.0)"


!ENTRY com.ibm.team.repository.common.remoteaccess.nl2a 2 0 2018-12-20 09:42:34.309
!MESSAGE Could not resolve module: com.ibm.team.repository.common.remoteaccess.nl2a [394]
  Unresolved requirement: Fragment-Host: com.ibm.team.repository.common.remoteaccess; bundle-version="[1.2.0,2.0.0)"
  Unresolved requirement: Fragment-Host: com.ibm.team.repository.common.remoteaccess; bundle-version="[1.2.0,2.0.0)"


!ENTRY com.ibm.team.enterprise.build.common.nl2 2 0 2018-12-20 09:42:34.310
!MESSAGE Could not resolve module: com.ibm.team.enterprise.build.common.nl2 [77]
  Unresolved requirement: Fragment-Host: com.ibm.team.enterprise.build.common; bundle-version="[3.0.0,4.0.0)"
  Unresolved requirement: Fragment-Host: com.ibm.team.enterprise.build.common; bundle-version="[3.0.0,4.0.0)"


!ENTRY com.ibm.teamp.filesystem.client.nl2 2 0 2018-12-20 09:42:34.310
!MESSAGE Could not resolve module: com.ibm.teamp.filesystem.client.nl2 [363]
  Unresolved requirement: Fragment-Host: com.ibm.teamp.filesystem.client; bundle-version="[4.0.0,5.0.0)"
  Unresolved requirement: Fragment-Host: com.ibm.teamp.filesystem.client; bundle-version="[4.0.0,5.0.0)"

....

!ENTRY org.eclipse.osgi 4 0 2018-12-20 09:42:34.369
!MESSAGE Application error
!STACK 1
java.lang.NullPointerException: null values not allowed
        at org.eclipse.core.internal.registry.ReferenceMap.put(ReferenceMap.java:351)
        at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.getBundle(RegistryStrategyOSGI.java:151)
        at org.eclipse.core.internal.registry.osgi.RegistryStrategyOSGI.createExecutableExtension(RegistryStrategyOSGI.java:166)
        at org.eclipse.core.internal.registry.ExtensionRegistry.createExecutableExtension(ExtensionRegistry.java:905)
        at org.eclipse.core.internal.registry.ConfigurationElement.createExecutableExtension(ConfigurationElement.java:243)
        at org.eclipse.core.internal.registry.ConfigurationElementHandle.createExecutableExtension(ConfigurationElementHandle.java:55)
        at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:191)
        at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
        at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)
        at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:90)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:55)
        at java.lang.reflect.Method.invoke(Method.java:508)
        at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)
        at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)
        at org.eclipse.equinox.launcher.Main.run(Main.java:1465)

Don,

You're seeing

Unresolved requirement: Fragment-Host: com.ibm.team.repository.common.remoteaccess

This is not really related to the issue posted on this forum. You're using JBE (Jazz build Engine) ? Are you getting this error message when trying to start JBE? There is nothing you can reset here, you'd need to ensure you're using a JBE version same as RTC server or one level below. I see that you're using JRE 1.8, have you tried with IBM JRE 1.7 instead?  Please check if you're able to ping RTC public URI from the build machine.

It might be worth to log a support case so one of us take a look at it.