Unable to find column with logical name

Question

I have 5 tables every table has relation one to many with the next table
Project_t -> project_level1_t -> project_level2_t -> project_level3_t -> project_level4_t
I

Answer 1

In ProjectLevel2Repository you have a mapping towards ProjectRepository using a @JoinColumn named projectlevel1id which doesn't exist. From what you describe, this should be mapped to ProjectLevel1Repository

@ManyToOne
@JoinColumn(name="projectlevel1id", referencedColumnName = "projectlevel1id")
@JsonIgnore
private ProjectLevel1Repository projectlevel1;