genhtml.perl: ERROR: no valid records found in tracefile gcov/lcov.info

[zerolfq]

genhtml.perl: ERROR: no valid records found in tracefile gcov/lcov.info
This error occurred
E:\Qtuser\build-Graduation_project-Desktop_Qt_5_12_1_MinGW_64_bit-Debug>E:\lcov\lcov.bat
Creating gcov\lcov.info ...
Capturing coverage data from .
E:\lcov/geninfo.perl . --output-filename gcov/lcov.info --base-directory .Found gcov version: 7.3.0
Scanning . for .gcda files ...
Found 1 data files in .
Processing 1.gcda
geninfo.perl: WARNING: E:\Qtuser\build-Graduation_project-Desktop_Qt_5_12_1_MinGW_64_bit-Debug/1.gcno: Overlong record at end of file!
E:\Qtuser\build-Graduation_project-Desktop_Qt_5_12_1_MinGW_64_bit-Debug/1.gcno:version 'A81*', prefer 'A73*'
E:\Qtuser\build-Graduation_project-Desktop_Qt_5_12_1_MinGW_64_bit-Debug/1.gcno:no functions found
geninfo.perl: WARNING: gcov did not create any files for E:\Qtuser\build-Graduation_project-Desktop_Qt_5_12_1_MinGW_64_bit-Debug/1.gcda!
Finished .info-file creation
Fixing back slashes ...
Generating html ...
gcov\html
Reading data file gcov/lcov.info
genhtml.perl: ERROR: no valid records found in tracefile gcov/lcov.info