Help with pg_nosql_benchmark

[KeniaVergara]

Hello! I'm working with the tool pg_nosql_benchmark. I did all the steps found at https://github.com/EnterpriseDB/pg_nosql_benchmark, but it does not run completely from the Linux console. Runs until "dropping mongo collection json_tables"
Please, what can I do?

[KeniaVergara]

Run the tool and do the following:
./pg_nosql_benchmark
exception: connect failed
PID: 3840 [RUNTIME: 06-16-19 11:04:07] pg_nosql_benchmark: MongoDB Version E
PID: 3840 [RUNTIME: 06-16-19 11:04:07] pg_nosql_benchmark: PostgreSQL Version 10.8
PID: 3840 [RUNTIME: 06-16-19 11:04:07] pg_nosql_benchmark: creating json data.
PID: 3840 [RUNTIME: 06-16-19 11:04:07] pg_nosql_benchmark: preparing postgresql INSERTs.
PID: 3840 [RUNTIME: 06-16-19 11:04:07] pg_nosql_benchmark: preparing mongo insert commands.
PID: 3840 [RUNTIME: 06-16-19 11:04:07] pg_nosql_benchmark: droping database benchmark if exists.
PID: 3840 [RUNTIME: 06-16-19 11:04:07] pg_nosql_benchmark: creating database benchmark.
PID: 3840 [RUNTIME: 06-16-19 11:04:10] pg_nosql_benchmark: dropping mongo collection json_tables
exception: connect failed

The connection falls! Please, what can I do?