Error accessing Rstudio 127.0.0.1

Question

I’m trying to access Rstudio and this error appears:

127.0.0.1 refused to connect. Try:

Check the connection Check proxy and firewall ERR_CONNECTION_REFUSED

if I go in cmd and der ping:

C: Windows system32> ping 127.0.0.1

I get the answer:

Firing 127.0.0.1 with 32 bytes of data: Answer of 127.0.0.1: bytes=32 time<1ms TTL=128 127.0.0.1 response: bytes=32 time<1ms TTL=128 Answer from 127.0.0.1: bytes=32 time<1ms TTL=128 127.0.0.1: bytes=32 time<1ms TTL=128

Ping statistics for 127.0.0.1: Packages: Sent = 4, Received = 4, Lost = 0 (0% of loss), Approximate a round number of times in milliseconds: Minimum = 0ms, Maximum = 0ms, Average = 0ms

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Typing in cmd Mongo, occurs:

Mongodb shell version v4.2.0 Connecting to: mongodb://127.0.0.1:27017/? compressors=disabled&gssapiServiceName=mongodb 2020-01-28T20:00:33.327-0300 E QUERY [js] Error: couldn’t connect to server 127.0.0.1:27017, Connection Attempt failed: Socketexception: Error Connecting to 127.0.0.1:27017 :: caused by :: No connection p to be made because the destiny machine has actively refused them. : connect@src/Mongo/shell/Mongo.js:341:17 @(connect):2:6 2020-01-28T20:00:33.330-0300 F - [main] Exception: connect failed 2020-01-28T20:00:33.330-0300 E - [main] exiting with code 1

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How do I fix this? Is my localhost another ? Or what might be?