WPBakery Blog Excerpt showing code

Its pulling through code like: [vc_row][vc_column][vc_column_text]This is my blog[/vc_column_text][/vc_column][/vc_row][vc_row][vc_column width="1/2"]

I have selected excerpts and entered a manual excerpt but randomly two of my posts are showing code while the rest aren’t, is there anywhere else I can look?

Thank you