unable to open DEX file

Can some one tell me what is wrong? I am getting below error:

01-02 19:15:09.001 22954-22954/com.makemytrip E/dalvikvm: Unable to extract+optimize DEX from '/data/data/com.makemytrip/files/apatch/file.apatch'
01-02 19:15:09.001 22954-22954/com.makemytrip E/AndFixManager: pacth
java.io.IOException: unable to open DEX file
at dalvik.system.DexFile.openDexFileNative(Native Method)
at dalvik.system.DexFile.openDexFile(DexFile.java:296)
at dalvik.system.DexFile.(DexFile.java:111)
at dalvik.system.DexFile.loadDex(DexFile.java:151)
at com.alipay.euler.andfix.AndFixManager.fix(AndFixManager.java:147)
at com.alipay.euler.andfix.patch.PatchManager.loadPatch(PatchManager.java:214)
at com.mmt.travel.app.mobile.MMTApplication.onCreate(MMTApplication.java:97)
at android.app.Instrumentation.callApplicationOnCreate(Instrumentation.java:1013)

01-02 19:15:09.001 22954-22954/com.makemytrip E/mmt_MMTApplication: XXXXX file /storage/emulated/0/file.apatch

Start with the Android stack trace at AndFixManager.fix and PatchManager.loadPatch, then inspect the patch path used by MMTApplication.onCreate for /data/data/com.makemytrip/files/apatch/file.apatch. Reproduce the failure with the referenced file and determine what information is needed to identify why the DEX cannot be opened; done means the cause and a verified resolution are documented.

Written by the indexing model from the issue text.