The phrase "a lack of solid" is correct and usable in written English.
It can be used when discussing the absence of something substantial or reliable, often in contexts like research, planning, or arguments.
Example: "The report was criticized for a lack of solid evidence to support its claims."
Alternatives: "a deficiency of concrete" or "an absence of substantial".
I often complain about a lack of solid evidence on guns' relationship to public health.
But Nato officials admitted that the intelligence was impaired by a lack of solid information from the ground.
But as you look more closely at this exhibition, several flaws emerge, primary among them a lack of solid, interesting drawing, used here as a gerund.
I think the audience is kind of pining for that more than anything else – there's a lack of solid female friendships on TV.
For many of those without power, the main complaint was a lack of solid information about how long their plight would last.
In 1875, the paper sadly pondered the nonexistence of a genuinely "American Play" and a lack of solid novelists, "strictly good writers who can also be called popular in the best sense".
The main problem for Kushner, as it has been for Lincoln's past historians and biographers, is a serious lack of solid evidence showing these hints and relationships ever moved out of the realm of speculation and rumor and became sexually intimate.
A lack of composure and solid defending from both sides meant that the match went down to penalties, with Sam Davies kicking four penalties for the Ospreys, and Jimmy Gopperth and Ian Madigan both kicking three for the home side.
There is presently a lack of efficient, compact, solid-state sources for the spectral range 1 10 THz, also known as the "terahertz gap".
For generic cyclosporine, we included studies on only kidney transplant in the meta-analysis for acute rejection because of a lack of data for other solid organ transplants.
A common statement was the lack of solid scientific data to reach strong recommendations with regard to the counselling of patients with fibroids on the issue to choose laparoscopic surgery with its established benefits or for laparotomy to escape the small risks related to morcellation of the fibroid.
