Error running '<project>': no document for: LightVirtualFile: /LLDB

I've just started using CLion for developing an application based on ROS and Qt5, but I'm unable to debug. Once I click the debug button the build succeeds but I get the following error message (regardless of using bundled LLDB or system/bundled GDB):

13:06    Error running '<project>': no document for: LightVirtualFile: /LLDB (fileType: com.intellij.openapi.fileTypes.UnknownFileType@74928a9b, language: Language: LLDB, length: 0, valid: true)

using GDB I get the similar error message

13:09    Error running '<project>': no document for: LightVirtualFile: /GDB (fileType: com.intellij.openapi.fileTypes.UnknownFileType@74928a9b, language: Language: GDB, length: 0, valid: true)

I'm not sure how to begin to look into this problem. Nothing comes up when I search for similar issues on either Google or other search engines.

I'd appreciate any tips or ideas