diff --git a/src/SASjs.ts b/src/SASjs.ts
index 015007b..5924985 100644
--- a/src/SASjs.ts
+++ b/src/SASjs.ts
@@ -619,6 +619,11 @@ export default class SASjs {
             authConfig
           )
         } else {
+          if (!config.contextName)
+            config = {
+              ...config,
+              contextName: 'SAS Job Execution compute context'
+            }
           return await this.jesJobExecutor!.execute(
             sasJob,
             data,
diff --git a/src/job-execution/WebJobExecutor.ts b/src/job-execution/WebJobExecutor.ts
index 98063fa..c75a06e 100644
--- a/src/job-execution/WebJobExecutor.ts
+++ b/src/job-execution/WebJobExecutor.ts
@@ -54,7 +54,12 @@ export class WebJobExecutor extends BaseJobExecutor {
 
       apiUrl += jobUri.length > 0 ? '&_job=' + jobUri : ''
 
-      apiUrl += config.contextName ? `&_contextname=${config.contextName}` : ''
+      // if context name exists and is not blank string
+      // then add _contextname variable in apiUrl
+      apiUrl +=
+        config.contextName && !/\s/.test(config.contextName)
+          ? `&_contextname=${config.contextName}`
+          : ''
     }
 
     let requestParams = {