在 R 中从 ivreg 绘图时出错（工具变量回归）

Question

I'm running a regression of log wage (lnwage) on education (educ) with an instrumental variable "quarter of birth" (qob). Running the model with ivreg and obtaining the summary results is all fine, however, I just don't manage to obtain any relevant plots.

See below the code I tried:

# Run a regression with instrumental variable qob of format:
# y ~ ex + en | ex + iv, data = data. 
model.ivreg1 <- lnwage ~ educ|qob
rsltA <- ivreg(model.ivreg, data = data_ivreg)

# Get the results for the partial F-test
summary(rsltA, diagnostics = TRUE)

# Relevant plots
qqplot(rsltA)
plot(rsltA)
car::qqPlot(rsltA)
qqplot(rsltA)

For the different plots I tried, I get the following error messages: error messages when running plots

I hope you can help me.

The packages I loaded: car, dplyr, ggplot2, AER, janitor, tidyr, modelsummary, stargazer (for other analyses in the same R script).