The mobile app error

hello I run the mobile app, but the error occur: What about the cause of the error,and how to solve it? Thanks！ LOSS counter for ACCH 31 Dropping frame with 86 bit errors Dropping frame with 84 bit errors Dropping frame with 79 bit errors LOSS counter for ACCH 30 Dropping frame with 82 bit errors Dropping frame with 82 bit errors Dropping frame with 89 bit errors LOSS counter for ACCH 29 Dropping frame with 86 bit errors Dropping frame with 76 bit errors Dropping frame with 70 bit errors LOSS counter for ACCH 28 Dropping frame with 88 bit errors Dropping frame with 79 bit errors Dropping frame with 70 bit errors LOSS counter for ACCH 27