GLMM in JASP
Dear forum users, I am trying my best at a GLMM in JASP. Unfortunately I get a warning.
Warning: Numerical problems with the maximum-likelihood estimate (e.g., gradients too large). This may indicate that the specified random effects parameters (random intercepts and random slopes) cannot be estimated from the available data. Consider carefully reducing the random effects structure, but be aware this may induce unknown risks of anti-conservative results (i.e., p-values might be lower than nominal).
Can anyone explain me what this means?