fix blog queries

Author: pramodreddysareddy

src/pages/blog/index.js

@@ -150,7 +150,7 @@ export const pageQuery = graphql`
             slug
             sourceInstanceName
           }
-          excerpt(format: MARKDOWN)
+          excerpt(format: PLAIN)
           frontmatter {
             title
             date

src/templates/blog-post.js

@@ -79,7 +79,7 @@ const stripDescription = (markdown) => {
     .process(markdown, (err, file) => {
       text = file.contents;
     });
-  return text.trim();
+  return text?.trim();
 };
 
 function BlogPostTemplate({ data }) {
@@ -267,7 +267,7 @@ export const pageQuery = graphql`
     }
     post: markdownRemark(fields: { slug: { eq: $slug } }) {
       id
-      excerpt(format: MARKDOWN, pruneLength: 160)
+      excerpt(format: PLAIN, pruneLength: 160)
       html
       rawMarkdownBody
       frontmatter {
@@ -294,7 +294,7 @@ export const pageQuery = graphql`
             slug
             sourceInstanceName
           }
-          excerpt(format: MARKDOWN)
+          excerpt(format: PLAIN)
           frontmatter {
             title
             date

src/templates/platform.js

@@ -247,7 +247,7 @@ export const pageQuery = graphql`
             authorimage
             externalLink
           }
-          excerpt(format: MARKDOWN)
+          excerpt(format: PLAIN)
         }
       }
     }

src/templates/role.js

@@ -168,7 +168,7 @@ query RoleBySlug($slug: String!, $tagRE: String!) {
           date
           authorimage
         }
-        excerpt(format: MARKDOWN)
+        excerpt(format: PLAIN)
       }
     }
   }

src/templates/use-case.js

@@ -171,7 +171,7 @@ export const pageQuery = graphql`
             date
             authorimage
           }
-          excerpt(format: MARKDOWN)
+          excerpt(format: PLAIN)
         }
       }
     }