BUG: Critical error when executing operation

[romshark]

The following setup produces a critical error when either operation is executed.

{"_version":0,"name":"Starwars","schema":"# The query type, represents all of the entry points into our object graph\ntype Query {\n\thero(episode: Episode = NEWHOPE): Character\n\treviews(episode: Episode!, since: Time): [Review!]!\n\tsearch(text: String!): [SearchResult!]!\n\tcharacter(id: ID!): Character\n\tdroid(id: ID!): Droid\n\thuman(id: ID!): Human\n\tstarship(id: ID!): Starship\n}\n# The mutation type, represents all updates we can make to our data\ntype Mutation {\n\tcreateReview(episode: Episode!, review: ReviewInput!): Review\n}\n# The episodes in the Star Wars trilogy\nenum Episode {\n\t# Star Wars Episode IV: A New Hope, released in 1977.\n\tNEWHOPE\n\t# Star Wars Episode V: The Empire Strikes Back, released in 1980.\n\tEMPIRE\n\t# Star Wars Episode VI: Return of the Jedi, released in 1983.\n\tJEDI\n}\n# A character from the Star Wars universe\ninterface Character {\n\t# The ID of the character\n\tid: ID!\n\t# The name of the character\n\tname: String!\n\t# The friends of the character, or an empty list if they have none\n\tfriends: [Character!]\n\t# The friends of the character exposed as a connection with edges\n\tfriendsConnection(first: Int, after: ID): FriendsConnection!\n\t# The movies this character appears in\n\tappearsIn: [Episode!]!\n}\n# Units of height\nenum LengthUnit {\n\t# The standard unit around the world\n\tMETER\n\t# Primarily used in the United States\n\tFOOT\n}\n# A humanoid creature from the Star Wars universe\ntype Human implements Character {\n\t# The ID of the human\n\tid: ID!\n\t# What this human calls themselves\n\tname: String!\n\t# Height in the preferred unit, default is meters\n\theight(unit: LengthUnit = METER): Float!\n\t# Mass in kilograms, or null if unknown\n\tmass: Float\n\t# This human's friends, or an empty list if they have none\n\tfriends: [Character!]\n\t# The friends of the human exposed as a connection with edges\n\tfriendsConnection(first: Int, after: ID): FriendsConnection!\n\t# The movies this human appears in\n\tappearsIn: [Episode!]!\n\t# A list of starships this person has piloted, or an empty list if none\n\tstarships: [Starship!]\n}\n# An autonomous mechanical character in the Star Wars universe\ntype Droid implements Character {\n\t# The ID of the droid\n\tid: ID!\n\t# What others call this droid\n\tname: String!\n\t# This droid's friends, or an empty list if they have none\n\tfriends: [Character!]\n\t# The friends of the droid exposed as a connection with edges\n\tfriendsConnection(first: Int, after: ID): FriendsConnection!\n\t# The movies this droid appears in\n\tappearsIn: [Episode!]!\n\t# This droid's primary function\n\tprimaryFunction: String\n}\n# A connection object for a character's friends\ntype FriendsConnection {\n\t# The total number of friends\n\ttotalCount: Int!\n\t# The edges for each of the character's friends.\n\tedges: [FriendsEdge!]\n\t# A list of the friends, as a convenience when edges are not needed.\n\tfriends: [Character!]\n\t# Information for paginating this connection\n\tpageInfo: PageInfo!\n}\n# An edge object for a character's friends\ntype FriendsEdge {\n\t# A cursor used for pagination\n\tcursor: ID!\n\t# The character represented by this friendship edge\n\tnode: Character\n}\n# Information for paginating this connection\ntype PageInfo {\n\tstartCursor: ID!\n\tendCursor: ID!\n\thasNextPage: Boolean!\n}\n# Represents a review for a movie\ntype Review {\n\t# The number of stars this review gave, 1-5\n\tstars: Int!\n\t# Comment about the movie\n\tcommentary: String\n\t# when the review was posted\n\ttime: Time\n}\n# The input object sent when someone is creating a new review\ninput ReviewInput {\n\t# 0-5 stars\n\tstars: Int!\n\t# Comment about the movie, optional\n\tcommentary: String\n\t# when the review was posted\n\ttime: Time\n}\ntype Starship {\n\t# The ID of the starship\n\tid: ID!\n\t# The name of the starship\n\tname: String!\n\t# Length of the starship, along the longest axis\n\tlength(unit: LengthUnit = METER): Float!\n\t# coordinates tracking this ship\n\thistory: [[Int!]!]!\n}\nunion SearchResult = Human | Droid | Starship\nscalar Time\n","creation":1679419459973,"templates":[{"_version":0,"name":"Hero & reviews","source":"query {\n\thero(episode: JEDI) {\n\t\tid\n\t\tappearsIn\n\t}\n\treviews(episode: EMPIRE || JEDI) {\n\t\tstars\n\t\tcommentary\n\t\ttime\n\t}\n}"},{"_version":0,"name":"Hero expanded","source":"query {\n\thero(episode: EMPIRE || JEDI) {\n\t\tid\n\t\tname\n\t\tappearsIn\n\t\tfriends {\n\t\t\tid\n\t\t\tname\n\t\t\tappearsIn\n\t\t\tfriends {\n\t\t\t\tid\n\t\t\t\tname\n\t\t\t\tappearsIn\n\t\t\t}\n\t\t}\n\t\tfriendsConnection(first: > 0, after: len > 0 || null) {\n\t\t\ttotalCount\n\t\t\tfriends {\n\t\t\t\tid\n\t\t\t\tname\n\t\t\t\tappearsIn\n\t\t\t}\n\t\t}\n\t}\n}"},{"_version":0,"name":"Hero friends","source":"query {\n\thero(episode: EMPIRE || JEDI) {\n\t\tid\n\t\tname\n\t\tappearsIn\n\t\tfriends {\n\t\t\tid\n\t\t\tname\n\t\t\tappearsIn\n\t\t\tfriends {\n\t\t\t\tid\n\t\t\t\tname\n\t\t\t\tappearsIn\n\t\t\t}\n\t\t}\n\t}\n}"},{"_version":0,"name":"Hero friends connection & starship","source":"query {\n\thero(episode: EMPIRE) {\n\t\tid\n\t\tname\n\t\t... on Droid { primaryFunction }\n\t\t... on Human { height(unit: *) mass }\n\t\tappearsIn\n\t\tfriendsConnection {\n\t\t\ttotalCount\n\t\t\tfriends {\n\t\t\t\tid name appearsIn\n\t\t\t\t...on Droid { primaryFunction }\n\t\t\t\t... on Human { height(unit: *) mass }\n\t\t\t}\n\t\t}\n\t}\n\tstarship(id:\"3001\") { name length(unit: != METER) }\n}"},{"_version":0,"name":"Hero minimal","source":"query {\n\thero(episode: *) {\n\t\tid\n\t\tname\n\t\tfriends {\n\t\t\tid\n\t\t\tname\n\t\t}\n\t}\n}"},{"_version":0,"name":"Hero with friends & reviews","source":"query {\n\thero(episode: JEDI) {\n\t\tid\n\t\tname\n\t\tappearsIn\n\t\tfriends {\n\t\t\tid\n\t\t\tname\n\t\t\tappearsIn\n\t\t}\n\t}\n\treviews(episode: EMPIRE || JEDI) {\n\t\tstars\n\t\tcommentary\n\t\ttime\n\t}\n}"},{"_version":0,"name":"Human max. 2","source":"query {\n\thuman(id: *) {\n\t\tmax 2 {\n\t\t\tid\n\t\t\tname\n\t\t\tappearsIn\n\t\t}\n\t}\n}"}],"operations":[{"_version":0,"name":"O1","source":"query A1($e: Episode = EMPIRE) {\n\thero(episode: $e) {\n\t\tid\n\t\tappearsIn\n    }\n}\n\nquery A2($e: Episode = JEDI) {\n\thero(episode: $e) {\n\t\tid\n\t\tappearsIn\n\t\tfriends {\n\t\t\tid\n\t\t}\n    }\n}","variables":"{\"e\":\"EMPIRE\"}"}]}