Neo4j导入节点关系失败，

报错import error: org.neo4j.internal.kernel.api.exceptions.schema.IllegalTokenNameException
IMPORT FAILED in 992ms
Data statistics is not available
Peak memory usage: 1.004GiB
Import error: org.neo4j.internal.kernel.api.exceptions.schema.IllegalTokenNameException: '' is not a valid token name. Token names cannot be empty or contain any null-bytes
Caused by:org.neo4j.internal.kernel.api.exceptions.schema.IllegalTokenNameException: '' is not a valid token name. Token names cannot be empty or contain any null-bytes
java.lang.IllegalArgumentException: org.neo4j.internal.kernel.api.exceptions.schema.IllegalTokenNameException: '' is not a valid token name. Token names cannot be empty or contain any null-bytes