RESTler uses "fuzzstring" instead of value from generator after first request

[qusysert]

Description

RESTler uses "fuzzstring" instead of value from generator after first request
For first request its actually generating random values using specified generator, then it uses "fuzzstring" as value for all fields

Steps to reproduce

1. Compile grammar
2. Add path to default generators custom_value_gen_template.py in engine_settings

{
"disable_cert_validation":true,
"per_resource_settings": {},
"max_combinations": 20,
"custom_value_generators": "/RESTler/restler/Compile/custom_value_gen_template.py",

"authentication": {
"token": {
"location": "/RESTler/restler/token.txt",
"token_refresh_interval": 300
}
}
}

3. Run restler in fuzz mode
   ./Restler fuzz --grammar_file /RESTler/restler/Compile/grammar.py --dictionary_file /RESTler/restler/Compile/dict.json --settings /RESTler/restler/Compile/engine_settings.json --target_ip 10.8.141.108 --target_port 9993 --host s

Expected results

Restler uses values from generators on every request

Actual results

Restler uses value from generators only on first request, then it using "fuzzstring" for all fields

network.testing.281473523395336.1.txt

Environment details

macOS, Python 3.12.8, dotnet 6.0.128, RESTler version: 9.2.4

[qusysert]

Its also uses same random generated values for every request in test mode
Why this happens?

network2.txt