Automatic merge from submit-queue

fix error message for pdb.go

**What this PR does / why we need it**:
fix error message for pdb.go

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
NONE

**Special notes for your reviewer**:
NONE

**Release note**:

```release-note
NONE
```