diff --git a/sasjs-tests/src/components/TestCard.ts b/sasjs-tests/src/components/TestCard.ts
index 9998ae3..65b1965 100644
--- a/sasjs-tests/src/components/TestCard.ts
+++ b/sasjs-tests/src/components/TestCard.ts
@@ -72,7 +72,7 @@ export class TestCard extends HTMLElement {
           ? `
         <div class="error">
           <strong>Error:</strong>
-          <pre>${(error as Error).message || String(error)}</pre>
+          <pre>${formatError(error)}</pre>
         </div>
       `
           : ''
@@ -110,4 +110,35 @@ export class TestCard extends HTMLElement {
   }
 }
 
+const escapeHtml = (s: string) =>
+  s.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;')
+
+const formatError = (err: unknown): string => {
+  if (err == null) return ''
+  if (typeof err === 'string') return escapeHtml(err)
+
+  const anyErr = err as any
+  // Adapter ErrorResponse: { error: { message, details, raw } }
+  const nestedMsg = anyErr?.error?.message
+  const directMsg = anyErr?.message
+  const msg = directMsg || nestedMsg
+
+  if (msg) {
+    const details = anyErr?.error?.details ?? anyErr?.details
+    const detailsStr =
+      details && typeof details === 'object'
+        ? `\n${JSON.stringify(details, null, 2)}`
+        : details
+          ? `\n${details}`
+          : ''
+    return escapeHtml(`${msg}${detailsStr}`)
+  }
+
+  try {
+    return escapeHtml(JSON.stringify(err, null, 2))
+  } catch {
+    return escapeHtml(String(err))
+  }
+}
+
 customElements.define('test-card', TestCard)
diff --git a/sasjs-tests/src/testSuites/Compute.ts b/sasjs-tests/src/testSuites/Compute.ts
index 81b4cec..1e97278 100644
--- a/sasjs-tests/src/testSuites/Compute.ts
+++ b/sasjs-tests/src/testSuites/Compute.ts
@@ -11,7 +11,7 @@ export const computeTests = (adapter: SASjs, appLoc: string): TestSuite => ({
       title: 'Compute API request',
       description: 'Should run the request with compute API approach',
       test: async () => {
-        return await adapter.request('common/sendArr', stringData)
+        return await adapter.request('services/common/sendArr', stringData)
       },
       assertion: (response: any) => {
         return response.table1[0][0] === stringData.table1[0].col1
@@ -25,7 +25,11 @@ export const computeTests = (adapter: SASjs, appLoc: string): TestSuite => ({
           useComputeApi: false
         }
 
-        return await adapter.request('common/sendArr', stringData, config)
+        return await adapter.request(
+          'services/common/sendArr',
+          stringData,
+          config
+        )
       },
       assertion: (response: any) => {
         return response.table1[0][0] === stringData.table1[0].col1
@@ -36,7 +40,10 @@ export const computeTests = (adapter: SASjs, appLoc: string): TestSuite => ({
       description: 'Should start a compute job and return the session',
       test: () => {
         const data: any = { table1: [{ col1: 'first col value' }] }
-        return adapter.startComputeJob(`${appLoc}/common/sendArr`, data)
+        return adapter.startComputeJob(
+          `${appLoc}/services/common/sendArr`,
+          data
+        )
       },
       assertion: (res: any) => {
         const expectedProperties = ['id', 'applicationName', 'attributes']
@@ -49,7 +56,7 @@ export const computeTests = (adapter: SASjs, appLoc: string): TestSuite => ({
       test: () => {
         const data: any = { table1: [{ col1: 'first col value' }] }
         return adapter.startComputeJob(
-          `${appLoc}/common/sendArr`,
+          `${appLoc}/services/common/sendArr`,
           data,
           {},
           undefined,
diff --git a/src/SASViyaApiClient.ts b/src/SASViyaApiClient.ts
index 9ca88f6..e5b75b6 100644
--- a/src/SASViyaApiClient.ts
+++ b/src/SASViyaApiClient.ts
@@ -1031,11 +1031,17 @@ export class SASViyaApiClient {
       jobArguments[`_webin_name${index + 1}`] = fileInfo.tableName
     })
 
+    // Viya JES requires arguments to be Map<String,String>; coerce booleans/numbers.
+    const stringifiedArguments: { [key: string]: string } = {}
+    for (const k of Object.keys(jobArguments)) {
+      stringifiedArguments[k] = String(jobArguments[k])
+    }
+
     const postJobRequestBody = {
       name: `exec-${jobName}`,
       description: 'Powered by SASjs',
       jobDefinition,
-      arguments: jobArguments
+      arguments: stringifiedArguments
     }
 
     const { result: postedJob } = await this.requestClient.post<Job>(