Missing SLF4J providers

[nhanledev]

[12:18:38 INFO]: [PlayerPoints] Enabling PlayerPoints v3.2.7
[12:18:38 ERROR]: [PlayerPoints] [STDERR] SLF4J: No SLF4J providers were found.
[12:18:38 WARN]: Nag author(s): '[Esophose, Black_ixx]' of 'PlayerPoints v3.2.7' about their usage of System.out/err.print. Please use your plugin's logger instead (JavaPlugin#getLogger).
[12:18:38 ERROR]: [PlayerPoints] [STDERR] SLF4J: Defaulting to no-operation (NOP) logger implementation
[12:18:38 ERROR]: [PlayerPoints] [STDERR] SLF4J: See https://www.slf4j.org/codes.html#noProviders for further details.