Program: 37410
Project: 37410
Buggy source:
@Override public void handle(Command command,Arguments arguments,Response response,IDebugAdapterContext context){
  if (context.getDebugSession() == null) {
    AdapterUtils.setErrorResponse(response,ErrorCode.EMPTY_DEBUG_SESSION,"String_Node_Str");
    return;
  }
  SetBreakpointArguments bpArguments=(SetBreakpointArguments)arguments;
  String clientPath=bpArguments.source.path;
  if (AdapterUtils.isWindows()) {
    String drivePrefix=FilenameUtils.getPrefix(clientPath);
    if (drivePrefix != null && drivePrefix.length() >= 2 && Character.isLowerCase(drivePrefix.charAt(0)) && drivePrefix.charAt(1) == ':') {
      drivePrefix=drivePrefix.substring(0,2);
      clientPath=clientPath.replaceFirst(drivePrefix,drivePrefix.toUpperCase());
    }
  }
  String sourcePath=clientPath;
  if (bpArguments.source.sourceReference != 0 && context.getSourceUri(bpArguments.source.sourceReference) != null) {
    sourcePath=context.getSourceUri(bpArguments.source.sourceReference);
  }
 else   if (StringUtils.isNotBlank(clientPath)) {
    sourcePath=AdapterUtils.convertPath(clientPath,AdapterUtils.isUri(clientPath),context.isDebuggerPathsAreUri());
  }
  if (StringUtils.isBlank(sourcePath)) {
    AdapterUtils.setErrorResponse(response,ErrorCode.SET_BREAKPOINT_FAILURE,String.format("String_Node_Str",bpArguments.source.path));
    return;
  }
  try {
    List<Types.Breakpoint> res=new ArrayList<>();
    IBreakpoint[] toAdds=this.convertClientBreakpointsToDebugger(sourcePath,bpArguments.breakpoints,context);
    IBreakpoint[] added=manager.setBreakpoints(sourcePath,toAdds,bpArguments.sourceModified);
    for (int i=0; i < bpArguments.breakpoints.length; i++) {
      if (toAdds[i] == added[i] && added[i].className() != null) {
        added[i].install().thenAccept(bp -> {
          Events.BreakpointEvent bpEvent=new Events.BreakpointEvent("String_Node_Str",this.convertDebuggerBreakpointToClient(bp,context));
          context.sendEventAsync(bpEvent);
        }
);
      }
 else       if (toAdds[i].hitCount() != added[i].hitCount() && added[i].className() != null) {
        added[i].setHitCount(toAdds[i].hitCount());
      }
      res.add(this.convertDebuggerBreakpointToClient(added[i],context));
    }
    response.body=new Responses.SetBreakpointsResponseBody(res);
  }
 catch (  DebugException e) {
    AdapterUtils.setErrorResponse(response,ErrorCode.SET_BREAKPOINT_FAILURE,String.format("String_Node_Str",e.toString()));
  }
}

Fixed version (ground truth):
@Override public void handle(Command command,Arguments arguments,Response response,IDebugAdapterContext context){
  if (context.getDebugSession() == null) {
    AdapterUtils.setErrorResponse(response,ErrorCode.EMPTY_DEBUG_SESSION,"String_Node_Str");
    return;
  }
  SetBreakpointArguments bpArguments=(SetBreakpointArguments)arguments;
  String clientPath=bpArguments.source.path;
  if (AdapterUtils.isWindows()) {
    String drivePrefix=FilenameUtils.getPrefix(clientPath);
    if (drivePrefix != null && drivePrefix.length() >= 2 && Character.isLowerCase(drivePrefix.charAt(0)) && drivePrefix.charAt(1) == ':') {
      drivePrefix=drivePrefix.substring(0,2);
      clientPath=clientPath.replaceFirst(drivePrefix,drivePrefix.toUpperCase());
    }
  }
  String sourcePath=clientPath;
  if (bpArguments.source.sourceReference != 0 && context.getSourceUri(bpArguments.source.sourceReference) != null) {
    sourcePath=context.getSourceUri(bpArguments.source.sourceReference);
  }
 else   if (StringUtils.isNotBlank(clientPath)) {
    sourcePath=AdapterUtils.convertPath(clientPath,AdapterUtils.isUri(clientPath),context.isDebuggerPathsAreUri());
  }
  if (StringUtils.isBlank(sourcePath)) {
    AdapterUtils.setErrorResponse(response,ErrorCode.SET_BREAKPOINT_FAILURE,String.format("String_Node_Str",bpArguments.source.path));
    return;
  }
  try {
    List<Types.Breakpoint> res=new ArrayList<>();
    IBreakpoint[] toAdds=this.convertClientBreakpointsToDebugger(sourcePath,bpArguments.breakpoints,context);
    IBreakpoint[] added=manager.setBreakpoints(AdapterUtils.decodeURIComponent(sourcePath),toAdds,bpArguments.sourceModified);
    for (int i=0; i < bpArguments.breakpoints.length; i++) {
      if (toAdds[i] == added[i] && added[i].className() != null) {
        added[i].install().thenAccept(bp -> {
          Events.BreakpointEvent bpEvent=new Events.BreakpointEvent("String_Node_Str",this.convertDebuggerBreakpointToClient(bp,context));
          context.sendEventAsync(bpEvent);
        }
);
      }
 else       if (toAdds[i].hitCount() != added[i].hitCount() && added[i].className() != null) {
        added[i].setHitCount(toAdds[i].hitCount());
      }
      res.add(this.convertDebuggerBreakpointToClient(added[i],context));
    }
    response.body=new Responses.SetBreakpointsResponseBody(res);
  }
 catch (  DebugException e) {
    AdapterUtils.setErrorResponse(response,ErrorCode.SET_BREAKPOINT_FAILURE,String.format("String_Node_Str",e.toString()));
  }
}