build error with remote-next

[Geoffrey-Pliez]

Snowpack BUILD can't find packages

"snowpack build
[15:06:48] [snowpack] ! building files...
[15:06:49] [snowpack] Build Result Error: There was a problem with a file build result.
[15:06:49] [snowpack] Package "lit-element" not found. Have you installed it? "
at Object.resolveEntrypoint (\npm\node_modules\snowpack\lib\index.js:94161:15)
at PackageSourceLocal.resolvePackageImport (\npm\node_modules\snowpack\lib\index.js:123374:34)
at resolveImport (\npm\node_modules\snowpack\lib\index.js:163242:48)
at \npm\node_modules\snowpack\lib\index.js:163265:47
at \npm\node_modules\snowpack\lib\index.js:116770:37
at Array.map ()
at transformEsmImports (\npm\node_modules\snowpack\lib\index.js:116762:31)
at async FileBuilder.resolveImports (\npm\node_modules\snowpack\lib\index.js:163264:24)
at async Object.loadUrl (\npm\node_modules\snowpack\lib\index.js:182756:39)
at async flushFileQueue (\npm\node_modules\snowpack\lib\index.js:183210:24)
at async Object.buildFiles (\npm\node_modules\snowpack\lib\index.js:183243:5)
at async build (\npm\node_modules\snowpack\lib\index.js:183341:5)
at async Object.command (\npm\node_modules\snowpack\lib\index.js:183365:9)
at async cli (\npm\node_modules\snowpack\lib\index.js:183675:9)

A solution ?

[Geoffrey-Pliez]

More details.

in my case, the problem is that snowpack build removes ".snowpack/source" and does not resolve package in the same way as snowpack dev.

So build looks for the package in the folder but it no longer exists.