Sanger mapping does not work with a gapped reference

The issue appeared in release 1.28.

Affected test:
GUITest_regression_scenarios_test_5622

Scenario:

1. Open the "Map Sanger Reads to Reference" dialog.
2. Set reference to "gaps _common_data/sanger/reference_gapped.gb".
3. Add reads from the "_common_data/sanger" folder.
4. Click the "Map" button.
   Expected state: the mapping has been finished without errors.
   Actual state:

   Task {Map Sanger reads to reference} finished with error: Subtask {Format DB task wrapper} is failed: Subtask {Run NCBI FormatDB task} is failed: Subtask {MakeBLASTDB tool} is failed: MakeBLASTDB tool exited with code 1