Convergence error for development version of lme4
问题 I am attempting to do a power analysis for a mixed-effects model using the development version of lme4 and this tutorial. I notice in the tutorial that lme4 throws a convergence error: ## Warning: Model failed to converge with max|grad| = 0.00187101 (tol = ## 0.001) The same warning comes up when I run the code for my dataset, with: ## Warning message: In checkConv(attr(opt, "derivs"), opt$par, checkCtrl = control$checkConv, : Model failed to converge with max|grad| = 0.774131 (tol = 0.001)