fix: try fix empty outputs

[skip ci]

.github/workflows/tf-acc-test.yaml

@@ -100,6 +100,7 @@ jobs:
       - name: set end time
         id: end_time
         run: |
+          set -e
           echo "end_time=$(date --rfc-3339=ns)" >> ${GITHUB_ENV}
           end=$(date +%s%N)
           echo "end=${end}" >> ${GITHUB_ENV}
@@ -107,7 +108,7 @@ jobs:
           diff=$((end-start))
           echo "diff=${diff}"
           duration=$(printf "%s.%s" "${diff:0: -9}" "${diff: -9:3}")
-          echoh "duration=${duration}"
+          echo "duration=${duration}"
           echo "duration=${duration}" >> ${GITHUB_ENV}
 
       - name: Notify