I just updated to 188.8.131.52 and then updated all my Sengled Color Plus bulbs to use the new driver. Now when the bulbs turn on and off errors are appearing in the log for the different groups that the bulbs are a member. The error message is below:
[dev:406]2019-08-22 12:03:28.983 am [error] groovy.lang.MissingMethodException: No signature of method: groupBulbDimmer.son() is applicable for argument types: () values:  Possible solutions: on(), run(), run(), run(java.io.File, [Ljava.lang.String;), off(), find() (son)
Everything seems to be working correctly other than the errors. Does anyone have any ideas on the error message?