nmea_topic_driver is not publishing anything

edit

Hi, I created a rosbag that contains NMEA messages (nmea_msgs/Sentence), and I would like to generate sensor_msgs/NavSatFix messages.

I am working on simulating time, so I run:

rosparam set use_sim_time true

Then, I play the rosbag thats contains the NMEA messages

rosbag play --clock nmea_gps.bag

Then, I start the nmea_topic_driver to generate publish sensor_msgs/NavSatFix on /fix topic:

rosrun nmea_navsat_driver nmea_topic_driver

Finally, when I check with rostopic if there are message on /fix topic

rostopic echo /fix

WARNING: no messages received and simulated time is active.
Is /clock being published?

Any, idea of what is going on?

I check if nmea_topic_driver was subscribed to the NMEA messages properly, and it looks fine:

rostopic info /nmea_sentence 
Type: nmea_msgs/Sentence

Publishers: 
 * /play_1516740862743383627 (http://MS-7A15:46035/)

Subscribers: 
 * /nmea_topic_driver (http://MS-7A15:46775/)

I also checked if the NMEA messages were right, and they look fine too:

rostopic echo /nmea_sentence 

header: 
  seq: 0
  stamp: 
    secs: 1514301945
    nsecs: 488000000
  frame_id: "GPS-RTK"
sentence: "$GPRMC,152545.80,A,3301.9913392,S,06053.0775644,W,0.12,0.00,261217,0.0,E,D*3F\r\n"
---
header: 
  seq: 1
  stamp: 
    secs: 1514301945
    nsecs: 488000000
  frame_id: "GPS-RTK"
sentence: "$GPGGA,152545.80,3301.9913392,S,06053.0775644,W,5,09,1.0,52.356,M,17.442,M,0.2,*72\r\
  \n"
---
header: 
  seq: 2
  stamp: 
    secs: 1514301945
    nsecs: 488000000
  frame_id: "GPS-RTK"
sentence: "$GPGSA,A,3,02,12,24,25,29,,,,,,,,12.0,1.7,11.8,1*29\r\n"
---
header: 
  seq: 3
  stamp: 
    secs: 1514301945
    nsecs: 488000000
  frame_id: "GPS-RTK"
sentence: "$GLGSA,A,3,75,76,86,87,,,,,,,,,43.1,15.6,40.1,2*03\r\n"
---
header: 
  seq: 4
  stamp: 
    secs: 1514301945
    nsecs: 488000000
  frame_id: "GPS-RTK"
sentence: "$GPGSV,2,1,05,02,52,107,35,12,61,145,38,24,49,007,37,25,48,217,36,1*6A\r\n"
---
header: 
  seq: 5
  stamp: 
    secs: 1514301945
    nsecs: 488000000
  frame_id: "GPS-RTK"
sentence: "$GPGSV,2,2,05,29,47,283,41,,,,,,,,,,,,,1*55\r\n"
---
header: 
  seq: 6
  stamp: 
    secs: 1514301945
    nsecs: 488000000
  frame_id: "GPS-RTK"
sentence: "$GLGSV,1,1,04,75,42,053,37,76,75,160,36,86,72,178,39,87,41,315,35,1*7F\r\n"
---
header: 
  seq: 7
  stamp: 
    secs: 1514301945
    nsecs: 488000000
  frame_id: "GPS-RTK"
sentence: "$GPGST,152545.80,0.090,,,,0.081,0.061,0.194*78\r\n"
---
header: 
  seq: 8
  stamp: 
    secs: 1514301945
    nsecs: 488000000
  frame_id: "GPS-RTK"
sentence: "$GPVTG,0.00,T,0.00,M,0.12,N,0.06,K,A*26\r\n"
---

UPDATED: 01/24/2018

The output of rosnode info /nmea_topic_driver is:

rosnode info /nmea_topic_driver

Node [/nmea_topic_driver]
Publications: 
 * /fix [sensor_msgs/NavSatFix]
 * /rosout [rosgraph_msgs/Log]
 * /time_reference [sensor_msgs/TimeReference]
 * /vel [geometry_msgs/TwistStamped]

Subscriptions: 
 * /clock [rosgraph_msgs/Clock]
 * /nmea_sentence [nmea_msgs/Sentence]

Services: 
 * /nmea_topic_driver/get_loggers
 * /nmea_topic_driver/set_logger_level


contacting node http://MS-7A15:34339/ ...
Pid: 28973
Connections:
 * topic: /rosout
    * to: /rosout
    * direction: outbound
    * transport: TCPROS
 * topic: /nmea_sentence
    * to: /play_1516817666576416404 (http://MS-7A15:38155/)
    * direction: inbound
    * transport: TCPROS
 * topic: /clock
    * to: /play_1516817666576416404 (http://MS-7A15:38155/)
    * direction: inbound
    * transport: TCPROS

Thanks in advance