这是什么意思？我只是修改了一个Toast

java.lang.RuntimeException: can,t modified Field:d(Ljava/lang/String;), in class :Lcom/businessvalue/android/app/a;
at com.euler.patch.diff.DiffInfo.addModifiedFields(DiffInfo.java:88)
at com.euler.patch.diff.DexDiffer.compareField(DexDiffer.java:125)
at com.euler.patch.diff.DexDiffer.compareField(DexDiffer.java:101)
at com.euler.patch.diff.DexDiffer.compareField(DexDiffer.java:95)
at com.euler.patch.diff.DexDiffer.diff(DexDiffer.java:32)
at com.euler.patch.ApkPatch.doPatch(ApkPatch.java:68)
at com.euler.patch.Main.main(Main.java:97)

Start by tracing com.euler.patch.diff.DiffInfo.addModifiedFields at DiffInfo.java:88 and DexDiffer.compareField at DexDiffer.java:95, 101, and 125. Reproduce the failure through ApkPatch.doPatch at ApkPatch.java:68 and Main.main at Main.java:97; done means the cause of the modified-field error is established and a verified fix or documented explanation is provided.

Written by the indexing model from the issue text.