Expedition 1.2.21 get stuck in phase 3 - when migrate configuration from Forcepoint to Palo Alto

[Nuthapon]

I am using Expedition Version 1.2.21.

Forcepoint Stonesoft are running version 6.3.12 and I would like to migrate configuration to PANOS. After importing Forcepoint configuration on Expedition tool, we found that the status get stuck in phase 3 and just only few interfaces, zones and object are getting migrated without security policy.

I get in the /tmp/error : 
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Fatal error: Uncaught TypeError: Argument 1 passed to Expression::toRange() must be of the type array, null given, called in /var/www/html/bin/configurations/parsers/Stonesoft/STONESOFT.php on line 4887 and defined in /var/www/html/libs/objects/tools/expressions/Expression.php:274
Stack trace:
#0 /var/www/html/bin/configurations/parsers/Stonesoft/STONESOFT.php(4887): Expression::toRange(NULL)
#1 /var/www/html/bin/configurations/parsers/Stonesoft/STONESOFT.php(705): calculate_expression_members('tarapark_180604', 1)
#2 {main}
thrown in /var/www/html/libs/objects/tools/expressions/Expression.php on line 274
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Toatally I am unable to migrate the whole Forcepoint Stonesoft configuration to Palo alto, except few base configs of the box.

Any help would be greatly appreciated.