error after changing setEncryption

[Crystalcube]

Please try to fill all questions below before submitting an issue.

• On which android versions do you have this issue? :any
• On which phones do you have this issue? :any
• Which hawk version are you using? :2.0.1
• Does this issue happen always or is it flaky? :always
• Can you write failing test? :
• If it is Hawk.put and Hawk.get issue, can you write down which data you were trying to save and get it back?
• Is the data you are trying to save it huge or small?small

my last app version setting like this:Hawk.init(this).setEncryption(new NoEncryption()).build();
when i modify like this:Hawk.init(this).build() and update app.
then app crashes. Hawk.get() became null.