diff --git a/src/webui/src/components/Para.tsx b/src/webui/src/components/Para.tsx
index bdd8757a98..738f7ad974 100644
--- a/src/webui/src/components/Para.tsx
+++ b/src/webui/src/components/Para.tsx
@@ -99,7 +99,7 @@ class Para extends React.Component<{}, ParaState> {
                                 speDimName.push(tem);
                             }
                             if (accParaData[item].status === 'SUCCEEDED') {
-                                if (accParaData[item].finalMetricData !== undefined) {
+                                if (accParaData[item].finalMetricData && accParaData[item].hyperParameters) {
                                     // get acc array
                                     accPara.push(parseFloat(accParaData[item].finalMetricData.data));
                                     // get dim and every line specific number
diff --git a/src/webui/src/components/Sessionpro.tsx b/src/webui/src/components/Sessionpro.tsx
index 126f4e5e7c..5ab64df0ce 100644
--- a/src/webui/src/components/Sessionpro.tsx
+++ b/src/webui/src/components/Sessionpro.tsx
@@ -7,6 +7,10 @@ import JSONTree from 'react-json-tree';
 require('../style/sessionpro.css');
 require('../style/logPath.css');
 
+interface ErrorPara {
+    error?: string;
+}
+
 interface TableObj {
     key: number;
     id: string;
@@ -19,7 +23,7 @@ interface TableObj {
 }
 
 interface Parameters {
-    parameters: object;
+    parameters: ErrorPara;
     logPath?: string;
     isLink?: boolean;
 }
@@ -189,7 +193,11 @@ class Sessionpro extends React.Component<{}, SessionState> {
                             if (tableData[item].finalMetricData) {
                                 acc = parseFloat(tableData[item].finalMetricData.data);
                             }
-                            desJobDetail.parameters = JSON.parse(tableData[item].hyperParameters).parameters;
+                            if (tableData[item].hyperParameters) {
+                                desJobDetail.parameters = JSON.parse(tableData[item].hyperParameters).parameters;
+                            } else {
+                                desJobDetail.parameters = { error: 'This trial\'s parameters are not available.' };
+                            }
                             if (tableData[item].logPath !== undefined) {
                                 desJobDetail.logPath = tableData[item].logPath;
                                 const isSessionLink = /^http/gi.test(tableData[item].logPath);
@@ -344,6 +352,10 @@ class Sessionpro extends React.Component<{}, SessionState> {
         }];
 
         const openRow = (record: TableObj) => {
+            let isHasParameters = true;
+            if (record.description.parameters.error) {
+                isHasParameters = false;
+            }
             const openRowDataSource = {
                 parameters: record.description.parameters
             };
@@ -354,12 +366,21 @@ class Sessionpro extends React.Component<{}, SessionState> {
             }
             return (
                 <pre id="description" className="jsontree">
-                    <JSONTree
-                        hideRoot={true}
-                        shouldExpandNode={() => true}  // default expandNode
-                        getItemString={() => (<span />)}  // remove the {} items
-                        data={openRowDataSource}
-                    />
+                    {
+                        isHasParameters
+                            ?
+                            <JSONTree
+                                hideRoot={true}
+                                shouldExpandNode={() => true}  // default expandNode
+                                getItemString={() => (<span />)}  // remove the {} items
+                                data={openRowDataSource}
+                            />
+                            :
+                            <div className="logpath">
+                                <span className="logName">Error: </span>
+                                <span className="error">'This trial's parameters are not available.'</span>
+                            </div>
+                    }
                     {
                         isLogLink
                             ?
diff --git a/src/webui/src/components/TrialStatus.tsx b/src/webui/src/components/TrialStatus.tsx
index d0e0980ee2..7f8d4fccf5 100644
--- a/src/webui/src/components/TrialStatus.tsx
+++ b/src/webui/src/components/TrialStatus.tsx
@@ -17,8 +17,12 @@ echarts.registerTheme('my_theme', {
     color: '#3c8dbc'
 });
 
+interface ErrorPara {
+    error?: string;
+}
+
 interface DescObj {
-    parameters: Object;
+    parameters: ErrorPara;
     logPath?: string;
     isLink?: boolean;
 }
@@ -237,6 +241,8 @@ class TrialStatus extends React.Component<{}, TabState> {
                             : '';
                         if (trialJobs[item].hyperParameters !== undefined) {
                             desc.parameters = JSON.parse(trialJobs[item].hyperParameters).parameters;
+                        } else {
+                            desc.parameters = { error: 'This trial\'s parameters are not available.' };
                         }
                         if (trialJobs[item].logPath !== undefined) {
                             desc.logPath = trialJobs[item].logPath;
@@ -478,6 +484,10 @@ class TrialStatus extends React.Component<{}, TabState> {
         ];
 
         const openRow = (record: TableObj) => {
+            let isHasParameters = true;
+            if (record.description.parameters.error) {
+                isHasParameters = false;
+            }
             const parametersRow = {
                 parameters: record.description.parameters
             };
@@ -488,12 +498,21 @@ class TrialStatus extends React.Component<{}, TabState> {
             }
             return (
                 <pre className="hyperpar">
-                    <JSONTree
-                        hideRoot={true}
-                        shouldExpandNode={() => true}  // default expandNode
-                        getItemString={() => (<span />)}  // remove the {} items
-                        data={parametersRow}
-                    />
+                    {
+                        isHasParameters
+                            ?
+                            < JSONTree
+                                hideRoot={true}
+                                shouldExpandNode={() => true}  // default expandNode
+                                getItemString={() => (<span />)}  // remove the {} items
+                                data={parametersRow}
+                            />
+                            :
+                            <div className="logpath">
+                                <span className="logName">Error: </span>
+                                <span className="error">'This trial's parameters are not available.'</span>
+                            </div>
+                    }
                     {
                         isLogLink
                             ?
diff --git a/src/webui/src/style/logPath.css b/src/webui/src/style/logPath.css
index 12b834e2e2..3e600171fb 100644
--- a/src/webui/src/style/logPath.css
+++ b/src/webui/src/style/logPath.css
@@ -12,3 +12,6 @@
     color: blue;
     text-decoration: underline;
 }
+.error{
+    color: #CB4B16;
+}