欠如 けつじょ
ketsujo

Noun
Suru Verb

1. lack; absence; shortage; deficiency; privation

Intransitive
それは相互 そうご理解 りかい欠如 けつじょがもとになっていると おもう。
sorewa sōgorikaino ketsujoga motoni natte iruto omō.
I think that is based on a lack of mutual understanding.