Schematic conversion does not work

[SpintroniK]

The PCB conversion works well, however, when I try to convert the schematic file, I get the following warning:
warning: input file 1-Schematic_PiezoBoard.json is not a valid EasyEDA configuration file.
The file has been exported recently from easyeda, and contains the following field : "editorVersion":"6.4.30".
Is there a way to get around this problem?