After I install Blog mage fan extension. Sidebar is missing and not showing.
How to check it?
1. Look for remove=""true"" in the theme layout XML files. For this you need to check out all these files in our theme in general:
app/design/frontend/ThemeVendor/themename/*/layout/*.xml
2. Remove or comment lines that look like
<referenceContainer name=""sidebar"" remove=""true"" />
OR
<referenceContainer name=""sidebar.additional"" remove=""true"" />
3. Save changes.
4. Flush Magento cache and check.
Look for remove="true" in the theme layout XML files. ... Remove or comment lines that look like ... Save changes. Flush Magento cache and check.