IntelliJ inspection gives “Cannot resolve symbol” but still compiles code

Maven : 3.5.2
JDK : 1.8
Intellij IDEA : 2017.3.1

Intellij gave me this error, whenever I tried to re-import the project.

Tried the following options
1. File | Invalidate Caches
2. Changed Maven, Under Settings->Maven->Importing and check the checkbox "import maven project automatically"
3. wiped out the IntelliJ config directory in ~ and rebuilt my IntelliJ project from scratch
4. Re-importing the project. Right Click on Project -> Maven ->Reimport

What worked for me 

The problem disappeared... after I "Open" project instead of "Import" project For reference: https://stackoverflow.com/questions/5905896/intellij-inspection-gives-cannot-resolve-symbol-but-still-compiles-code#comment19762413_5905931