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appears when ggseqlogo package is installed today:

Error: ‘lazyeval’ has no export of the object’ f_eval ‘

The error

is caused by not installing the lazyeval package.

below is the specific code:

> Install. Packages (“G:/R language /R crawmer /R3.5 package /R3_5/lazyeval_0.2.1.zip”, repos = NULL, type = “win.binary”)
package ‘lazyeval’ unpacked and MD5 checked
> Library (“lazyeval”, lib.loc=”F:/R/ r-3.3.1 /library”)
Warning message:
Warning message:
library(“lazyeval”, lib.loc=”F:/R/ r-3.3.1 /library”)
Library (“ggseqlogo”, lib.loc=”F:/R/ r-3.3.1 /library”)
Warning message:
Warning message:
package “ggseqlogo” was built in R version 3.3.3