diff --git a/lib/index.js b/lib/index.js
index 0a5731525..5e237ae82 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -22017,12 +22017,20 @@ function checkManifestStability(kubectl, resources) {
 exports.checkManifestStability = checkManifestStability;
 function annotateAndLabelResources(files, kubectl, resourceTypes, allPods) {
     return __awaiter(this, void 0, void 0, function* () {
+        const defaultWorkflowFileName = 'k8s-deploy-failed-workflow-annotation';
         const githubToken = core.getInput('token');
-        const workflowFilePath = yield githubUtils_1.getWorkflowFilePath(githubToken);
+        let workflowFilePath;
+        try {
+            workflowFilePath = yield githubUtils_1.getWorkflowFilePath(githubToken);
+        }
+        catch (ex) {
+            core.warning(`Failed to extract workflow file name: ${ex}`);
+            workflowFilePath = defaultWorkflowFileName;
+        }
         const deploymentConfig = yield dockerUtils_1.getDeploymentConfig();
         const annotationKeyLabel = workflowAnnotationUtils_1.getWorkflowAnnotationKeyLabel();
-        yield annotateResources(files, kubectl, resourceTypes, allPods, annotationKeyLabel, workflowFilePath, deploymentConfig);
-        yield labelResources(files, kubectl, annotationKeyLabel);
+        yield annotateResources(files, kubectl, resourceTypes, allPods, annotationKeyLabel, workflowFilePath, deploymentConfig).catch((err) => core.warning(`Failed to annotate resources: ${err} `));
+        yield labelResources(files, kubectl, annotationKeyLabel).catch((err) => core.warning(`Failed to label resources: ${err}`));
     });
 }
 exports.annotateAndLabelResources = annotateAndLabelResources;
@@ -22360,13 +22368,17 @@ class Kubectl {
             let newReplicaSet = '';
             if (result === null || result === void 0 ? void 0 : result.stdout) {
                 const stdout = result.stdout.split('\n');
+                core.debug('stdout from getNewReplicaSet is ' + JSON.stringify(stdout));
                 stdout.forEach((line) => {
                     const newreplicaset = 'newreplicaset';
-                    if (line && line.toLowerCase().indexOf(newreplicaset) > -1)
+                    if (line && line.toLowerCase().indexOf(newreplicaset) > -1) {
+                        core.debug(`found string of interest for replicaset, line is ${line}`);
+                        core.debug(`substring is ${line.substring(newreplicaset.length).trim()}`);
                         newReplicaSet = line
                             .substring(newreplicaset.length)
                             .trim()
                             .split(' ')[0];
+                    }
                 });
             }
             return newReplicaSet;
@@ -23803,8 +23815,9 @@ exports.getTrafficSplitAPIVersion = getTrafficSplitAPIVersion;
 "use strict";
 
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-exports.cleanLabel = exports.getWorkflowAnnotationKeyLabel = exports.getWorkflowAnnotations = void 0;
+exports.removeInvalidLabelCharacters = exports.cleanLabel = exports.getWorkflowAnnotationKeyLabel = exports.getWorkflowAnnotations = exports.VALID_LABEL_REGEX = void 0;
 const ANNOTATION_PREFIX = 'actions.github.com';
+exports.VALID_LABEL_REGEX = /([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9]/;
 function getWorkflowAnnotations(lastSuccessRunSha, workflowFilePath, deploymentConfig) {
     const annotationObject = {
         run: process.env.GITHUB_RUN_ID,
@@ -23836,14 +23849,20 @@ exports.getWorkflowAnnotationKeyLabel = getWorkflowAnnotationKeyLabel;
  * @returns cleaned label
  */
 function cleanLabel(label) {
-    let removedInvalidChars = label
+    let removedInvalidChars = removeInvalidLabelCharacters(label);
+    const regexResult = exports.VALID_LABEL_REGEX.exec(removedInvalidChars) || [
+        'github-workflow-file'
+    ];
+    return regexResult[0];
+}
+exports.cleanLabel = cleanLabel;
+function removeInvalidLabelCharacters(label) {
+    return label
         .replace(/\s/gi, '_')
         .replace(/[\/\\\|]/gi, '-')
         .replace(/[^-A-Za-z0-9_.]/gi, '');
-    const regex = /([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9]/;
-    return regex.exec(removedInvalidChars)[0] || '';
 }
-exports.cleanLabel = cleanLabel;
+exports.removeInvalidLabelCharacters = removeInvalidLabelCharacters;
 
 
 /***/ }),
diff --git a/src/strategyHelpers/deploymentHelper.ts b/src/strategyHelpers/deploymentHelper.ts
index bd1d7c029..30336e5fb 100644
--- a/src/strategyHelpers/deploymentHelper.ts
+++ b/src/strategyHelpers/deploymentHelper.ts
@@ -150,8 +150,15 @@ export async function annotateAndLabelResources(
    resourceTypes: Resource[],
    allPods: any
 ) {
+   const defaultWorkflowFileName = 'k8s-deploy-failed-workflow-annotation'
    const githubToken = core.getInput('token')
-   const workflowFilePath = await getWorkflowFilePath(githubToken)
+   let workflowFilePath
+   try {
+      workflowFilePath = await getWorkflowFilePath(githubToken)
+   } catch (ex) {
+      core.warning(`Failed to extract workflow file name: ${ex}`)
+      workflowFilePath = defaultWorkflowFileName
+   }
 
    const deploymentConfig = await getDeploymentConfig()
    const annotationKeyLabel = getWorkflowAnnotationKeyLabel()
@@ -164,8 +171,11 @@ export async function annotateAndLabelResources(
       annotationKeyLabel,
       workflowFilePath,
       deploymentConfig
+   ).catch((err) => core.warning(`Failed to annotate resources: ${err} `))
+
+   await labelResources(files, kubectl, annotationKeyLabel).catch((err) =>
+      core.warning(`Failed to label resources: ${err}`)
    )
-   await labelResources(files, kubectl, annotationKeyLabel)
 }
 
 async function annotateResources(
diff --git a/src/types/kubectl.ts b/src/types/kubectl.ts
index 831c859e6..61e0d8d6a 100644
--- a/src/types/kubectl.ts
+++ b/src/types/kubectl.ts
@@ -70,13 +70,21 @@ export class Kubectl {
       let newReplicaSet = ''
       if (result?.stdout) {
          const stdout = result.stdout.split('\n')
+         core.debug('stdout from getNewReplicaSet is ' + JSON.stringify(stdout))
          stdout.forEach((line: string) => {
             const newreplicaset = 'newreplicaset'
-            if (line && line.toLowerCase().indexOf(newreplicaset) > -1)
+            if (line && line.toLowerCase().indexOf(newreplicaset) > -1) {
+               core.debug(
+                  `found string of interest for replicaset, line is ${line}`
+               )
+               core.debug(
+                  `substring is ${line.substring(newreplicaset.length).trim()}`
+               )
                newReplicaSet = line
                   .substring(newreplicaset.length)
                   .trim()
                   .split(' ')[0]
+            }
          })
       }
 
diff --git a/src/utilities/workflowAnnotationUtils.test.ts b/src/utilities/workflowAnnotationUtils.test.ts
index bed2bd1a8..f989e879e 100644
--- a/src/utilities/workflowAnnotationUtils.test.ts
+++ b/src/utilities/workflowAnnotationUtils.test.ts
@@ -1,4 +1,8 @@
-import {cleanLabel} from '../utilities/workflowAnnotationUtils'
+import {
+   cleanLabel,
+   removeInvalidLabelCharacters,
+   VALID_LABEL_REGEX
+} from '../utilities/workflowAnnotationUtils'
 
 describe('WorkflowAnnotationUtils', () => {
    describe('cleanLabel', () => {
@@ -16,5 +20,14 @@ describe('WorkflowAnnotationUtils', () => {
             cleanLabel('Workflow Name / With Slashes / And Spaces')
          ).toEqual('Workflow_Name_-_With_Slashes_-_And_Spaces')
       })
+      it('should return a blank string when regex fails (https://github.com/Azure/k8s-deploy/issues/266)', () => {
+         const label = '持续部署'
+         expect(cleanLabel(label)).toEqual('github-workflow-file')
+
+         let removedInvalidChars = removeInvalidLabelCharacters(label)
+
+         const regexResult = VALID_LABEL_REGEX.exec(removedInvalidChars)
+         expect(regexResult).toBe(null)
+      })
    })
 })
diff --git a/src/utilities/workflowAnnotationUtils.ts b/src/utilities/workflowAnnotationUtils.ts
index 248b53f33..3c4e18a36 100644
--- a/src/utilities/workflowAnnotationUtils.ts
+++ b/src/utilities/workflowAnnotationUtils.ts
@@ -2,6 +2,8 @@ import {DeploymentConfig} from '../types/deploymentConfig'
 
 const ANNOTATION_PREFIX = 'actions.github.com'
 
+export const VALID_LABEL_REGEX = /([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9]/
+
 export function getWorkflowAnnotations(
    lastSuccessRunSha: string,
    workflowFilePath: string,
@@ -37,11 +39,17 @@ export function getWorkflowAnnotationKeyLabel(): string {
  * @returns cleaned label
  */
 export function cleanLabel(label: string): string {
-   let removedInvalidChars = label
+   let removedInvalidChars = removeInvalidLabelCharacters(label)
+
+   const regexResult = VALID_LABEL_REGEX.exec(removedInvalidChars) || [
+      'github-workflow-file'
+   ]
+   return regexResult[0]
+}
+
+export function removeInvalidLabelCharacters(label: string): string {
+   return label
       .replace(/\s/gi, '_')
       .replace(/[\/\\\|]/gi, '-')
       .replace(/[^-A-Za-z0-9_.]/gi, '')
-
-   const regex = /([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9]/
-   return regex.exec(removedInvalidChars)[0] || ''
 }