fix issue

routers/api/v1/repo/cloudbrain.go

@@ -573,6 +573,12 @@ func CloudbrainGetLog(ctx *context.APIContext) {
 				}
 			}
 		}
+		else {
+			if startLine > 0 {
+				startLine += 1
+				endLine += 1
+			}
+		}
 		result = getLogFromModelDir(job.JobName, startLine, endLine, resultPath)
 		if result == nil {
 			log.Error("GetJobLog failed: %v", err, ctx.Data["MsgID"])