is this something that I should report?

panic: interface conversion: interface {} is nil, not string
    goroutine 115 [running]:
    <http://github.com/hashicorp/terraform-provider-google-beta/google-beta.resourceBigQueryDatasetRead(0xc000dc4400|github.com/hashicorp/terraform-provider-google-beta/google-beta.resourceBigQueryDatasetRead(0xc000dc4400>, 0x3e11880, 0xc000c75c00, 0x5c13860, 0xc000075200)
    	/home/runner/go/pkg/mod/github.com/pulumi/terraform-provider-google-beta@v0.0.0-20210413102234-53ba2d5c714b/google-beta/resource_big_query_dataset.go:488 +0x1c29
    <http://github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*Resource).read(0xc000894d80|github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*Resource).read(0xc000894d80>, 0x43cc6b0, 0xc000140030, 0xc000dc4400, 0x3e11880, 0xc000c75c00, 0x0, 0x0, 0x0)
    	/home/runner/go/pkg/mod/github.com/pulumi/terraform-plugin-sdk/v2@v2.0.0-20201218231525-9cca98608a5e/helper/schema/resource.go:290 +0x88
    <http://github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*Resource).RefreshWithoutUpgrade(0xc000894d80|github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema.(*Resource).RefreshWithoutUpgrade(0xc000894d80>, 0x43cc6b0, 0xc000140030, 0xc000d34c40, 0x3e11880, 0xc000c75c00, 0x17, 0xc00035c2d0, 0x21, 0xc000dad200)
    	/home/runner/go/pkg/mod/github.com/pulumi/terraform-plugin-sdk/v2@v2.0.0-20201218231525-9cca98608a5e/helper/schema/resource.go:564 +0x1cb
    <http://github.com/pulumi/pulumi-terraform-bridge/v2/pkg/tfshim/sdk-v2.v2Provider.Refresh(0xc00050d6d0|github.com/pulumi/pulumi-terraform-bridge/v2/pkg/tfshim/sdk-v2.v2Provider.Refresh(0xc00050d6d0>, 0x3e6e49f, 0x17, 0x43cd520, 0xc000dbf670, 0xc00035c2d0, 0x21, 0xc000dad0e0, 0xc000de00d0)
    	/home/runner/go/pkg/mod/github.com/pulumi/pulumi-terraform-bridge/v2@v2.23.0/pkg/tfshim/sdk-v2/provider.go:125 +0x1da
    <http://github.com/pulumi/pulumi-terraform-bridge/v2/pkg/tfbridge.(*Provider).Read(0xc00000a1e0|github.com/pulumi/pulumi-terraform-bridge/v2/pkg/tfbridge.(*Provider).Read(0xc00000a1e0>, 0x43cc720, 0xc000dad140, 0xc001308f00, 0xc00000a1e0, 0x397af01, 0xc00138f600)
    	/home/runner/go/pkg/mod/github.com/pulumi/pulumi-terraform-bridge/v2@v2.23.0/pkg/tfbridge/provider.go:939 +0x692
    <http://github.com/pulumi/pulumi/sdk/v2/proto/go._ResourceProvider_Read_Handler.func1(0x43cc720|github.com/pulumi/pulumi/sdk/v2/proto/go._ResourceProvider_Read_Handler.func1(0x43cc720>, 0xc000dad140, 0x3cfc420, 0xc001308f00, 0x3d4e6c0, 0x5c12f38, 0x43cc720, 0xc000dad140)
    	/home/runner/go/pkg/mod/github.com/pulumi/pulumi/sdk/v2@v2.24.1/proto/go/provider.pb.go:2287 +0x89
    <http://github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc.OpenTracingServerInterceptor.func1(0x43cc720|github.com/grpc-ecosystem/grpc-opentracing/go/otgrpc.OpenTracingServerInterceptor.func1(0x43cc720>, 0xc000dacea0, 0x3cfc420, 0xc001308f00, 0xc000a07e20, 0xc000d3bf50, 0x0, 0x0, 0x4396ac0, 0xc0004fcfb0)
    	/home/runner/go/pkg/mod/github.com/grpc-ecosystem/grpc-opentracing@v0.0.0-20180507213350-8e809c8a8645/go/otgrpc/server.go:57 +0x30a
    <http://github.com/pulumi/pulumi/sdk/v2/proto/go._ResourceProvider_Read_Handler(0x3dd5d00|github.com/pulumi/pulumi/sdk/v2/proto/go._ResourceProvider_Read_Handler(0x3dd5d00>, 0xc00000a1e0, 0x43cc720, 0xc000dacea0, 0xc001319e60, 0xc0005b1220, 0x43cc720, 0xc000dacea0, 0xc000dc2000, 0xb8)
    	/home/runner/go/pkg/mod/github.com/pulumi/pulumi/sdk/v2@v2.24.1/proto/go/provider.pb.go:2289 +0x150
    <http://google.golang.org/grpc.(*Server).processUnaryRPC(0xc000505500|google.golang.org/grpc.(*Server).processUnaryRPC(0xc000505500>, 0x4408438, 0xc000102f00, 0xc0003e3400, 0xc000638150, 0x5bcfd60, 0x0, 0x0, 0x0)
    	/home/runner/go/pkg/mod/google.golang.org/grpc@v1.36.0/server.go:1217 +0x52b
    <http://google.golang.org/grpc.(*Server).handleStream(0xc000505500|google.golang.org/grpc.(*Server).handleStream(0xc000505500>, 0x4408438, 0xc000102f00, 0xc0003e3400, 0x0)
    	/home/runner/go/pkg/mod/google.golang.org/grpc@v1.36.0/server.go:1540 +0xd0c
    <http://google.golang.org/grpc.(*Server).serveStreams.func1.2(0xc0002be140|google.golang.org/grpc.(*Server).serveStreams.func1.2(0xc0002be140>, 0xc000505500, 0x4408438, 0xc000102f00, 0xc0003e3400)
    	/home/runner/go/pkg/mod/google.golang.org/grpc@v1.36.0/server.go:878 +0xab
    created by <http://google.golang.org/grpc.(*Server).serveStreams.func1|google.golang.org/grpc.(*Server).serveStreams.func1>
    	/home/runner/go/pkg/mod/google.golang.org/grpc@v1.36.0/server.go:876 +0x1fd

Yes... what provider are you using?

it is GCP provider, but I think the "beta" comes from terraform or GCP API. I'll open the ticket for this

https://github.com/pulumi/pulumi-gcp please