Prometheus module stop working with new metrics format

I used to have an thirdparty prometheus exporter (Microprofile metrics) and the prometheus metricbeat module worked fine. Here an example of the working format:

# HELP base:thread_max_count Displays the peak live thread count since the Java virtual machine started or peak was reset. This includes daemon and non-daemon threads.
# TYPE base:thread_max_count counter
base:thread_max_count 79.0
# HELP base:cpu_available_processors Displays the number of processors available to the Java virtual machine. This value may change during a particular invocation of the virtual machine.
# TYPE base:cpu_available_processors gauge
base:cpu_available_processors 1.0
# HELP base:thread_daemon_count Displays the current number of live daemon threads.
# TYPE base:thread_daemon_count counter
base:thread_daemon_count 26.0

But now i have updated the exporter and metricbeat stopped working. When I run this test:

metricbeat test modules -v

The response is:

prometheus...
  collector...
    error... ERROR timeout waiting for an event

Here an example of the format of the new exporter:

# HELP base:thread_max_count Displays the peak live thread count since the Java virtual machine started or peak was reset. This includes daemon and non-daemon threads.
# TYPE base:thread_max_count counter
base:thread_max_count 79.0
# HELP base_thread_daemon_count Displays the current number of live daemon threads.
# TYPE base_thread_daemon_count gauge
base_thread_daemon_count 7.0

How can I at least debug this error?