error calling isset: unsupported type "invalid"

[2Dou]

ERROR 2017/03/14 16:06:38 theme/partials/head.html template: theme/partials/head.html:56:13: executing "theme/partials/head.html" at <isset .Params.bigimg...>: error calling isset: unsupported type "invalid"
ERROR 2017/03/14 16:06:38 theme/partials/header_wp.html template: theme/partials/header_wp.html:13:8: executing "theme/partials/header_wp.html" at <isset $bigimg 0>: error calling isset: unsupported type "invalid"

[halogenica]

Can you please explain this? What did you do that caused this? How can I reproduce it? to me it looks like it could have been caused by setting an invalid image name in the config.toml file. Can you delete all the [[Params.bigimg]] fields and tell me if the problem still occurs? The bigimg's seem to work correctly on the example website as-is.

[tamanugi]

I also experienced a similar problem.

Although there was no problem when using version 0.19,
A similar error occurred when version 0.20dev was used.

I think this error has occurred due to the following change in version 0.20.
gohugoio/hugo#3092

[halogenica]

I think this is fixed now. Please feel free to give it a shot and let me know if it's not fixed. I tested with 0.20. I was looking for the particular change that I thought would have fixed it (I made it a while ago but couldn't test for sure because I wasn't able to reproduce the error at the time); but I couldn't find the exact commit that fixed it.