R - psych::omega n.iter Error in pmax(eX$values, 0) : invalid input type

Question

I try to conduct CIs for McDonalds Omega using the 'omega' function from 'psych'-package in R. The following code worked for each subscale of my scale, using 3 or 4 items of the entire scale, but not for the entire scale (10 items in total). Using the code 'psych::omega(data, n.iter = 10)' for my entire scale I always get the following error code:

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Thanks for your help in advance! :)

I tried varying the number of bootstraps (n.iter = 2/ n.iter = 10/ ...). The code psych::omega also works perfectly fine without 'n.iter' but I seek to conduct the CI of my McDonalds Omega.