FATAL EXCEPTION: OkHttp Dispatcher

E/AndroidRuntime: FATAL EXCEPTION: OkHttp Dispatcher
Process: com.inspur.zxzzfw, PID: 32184
java.lang.NullPointerException: interceptor com.inspur.zxzzfw.base.BaseApp b @ a 7 f 649 d r e t u r n e d n u l l a t b 7. g . b ( S o u r c e F i l e : 239 ) a t b 7. g . p r o c e e d ( U n k n o w n S o u r c e : 9 ) a t o k h t t p 3. R e a l C a l l . g e t R e s p o n s e W i t h I n t e r c e p t o r C h a i n ( S o u r c e F i l e : 123 ) a t o k h t t p 3. R e a l C a l l b@a7f649d returned null at b7.g.b(SourceFile:239) at b7.g.proceed(Unknown Source:9) at okhttp3.RealCall.getResponseWithInterceptorChain(SourceFile:123) at okhttp3.RealCall b@a7f649dreturnednullatb7.g.b(SourceFile:239)atb7.g.proceed(UnknownSource:9)atokhttp3.RealCall.getResponseWithInterceptorChain(SourceFile:123)atokhttp3.RealCallAsyncCall.run(SourceFile:52)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1137)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:637)
at java.lang.Thread.run(Thread.java:1015)

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错误原因: response.body().string()中的 (.string)只能使用一次