Could not convert database file to json due to unknown exception

[sumisukyo]

Error trying to convert Helium Backup

java.lang.NumberFormatException: For input string: "??,O?'_?h??"
at java.lang.NumberFormatException.forInputString(Unknown Source)
at java.lang.Long.parseLong(Unknown Source)
at com.waicool20.mr2tachiyomi.util.ABUtils.correctHeaders(ABUtils.kt:131)
at com.waicool20.mr2tachiyomi.util.ABUtils.processFile(ABUtils.kt:87)
at com.waicool20.mr2tachiyomi.util.ABUtils.ab2tar(ABUtils.kt:40)
at com.waicool20.mr2tachiyomi.MR2Tachiyomi.extractDbFromAb(MR2Tachiyomi.kt:106)
at com.waicool20.mr2tachiyomi.MR2Tachiyomi.convert(MR2Tachiyomi.kt:87)
at com.waicool20.mr2tachiyomi.MR2TachiyomiKt.main(MR2Tachiyomi.kt:72)